10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

______________________________________________ 

Form 10-Q

 ______________________________________________

(Mark One)

x	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the quarterly period ended September 30, 2011

or

o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the transition period from                      to

Commission file number 0-27275

______________________________________________ 

Akamai Technologies, Inc.

(Exact name of registrant as specified in its charter)

Delaware	04-3432319
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)

8 Cambridge Center

Cambridge, MA 02142

(617) 444-3000

(Address, Including Zip Code, and Telephone Number,

Including Area Code, of Registrant’s Principal Executive Offices)

______________________________________________ 

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 (the “Exchange Act”) during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer  x	Accelerated filer o	Non-accelerated filer o	Smaller reporting company o
		(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

The number of shares outstanding of the registrant’s common stock as of November 4, 2011: 179,431,186 shares.

AKAMAI TECHNOLOGIES, INC.

FORM 10-Q

For the quarterly period ended September 30, 2011

TABLE OF CONTENTS

		Page
PART I. FINANCIAL INFORMATION
Item 1.	Financial Statements (unaudited)	3
	Consolidated Balance Sheets at September 30, 2011 and December 31, 2010	3
	Consolidated Statements of Operations for the three and nine months ended September 30, 2011 and 2010	4
	Consolidated Statements of Cash Flows for the nine months ended September 30, 2011 and 2010	5
	Notes to Unaudited Consolidated Financial Statements	6
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	20
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	33
Item 4.	Controls and Procedures	34
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	35
Item 1A.	Risk Factors	35
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	44
Item 6.	Exhibits	44
SIGNATURES		45
EXHIBIT INDEX		46

2

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

AKAMAI TECHNOLOGIES, INC.

CONSOLIDATED BALANCE SHEETS

(UNAUDITED)

	September 30, 2011			December 31, 2010
	(In thousands, except share data)
ASSETS
Current assets:
Cash and cash equivalents	$	355,599		$	231,866
Marketable securities (including restricted securities of $51 and $272 at September 30, 2011 and December 31, 2010, respectively)	331,967			375,005
Accounts receivable, net of reserves of $5,676 and $5,232 at September 30, 2011 and December 31, 2010, respectively	182,665			175,366
Prepaid expenses and other current assets	47,085			48,029
Deferred income tax assets	7,163			28,201
Total current assets	924,479			858,467
Property and equipment, net	285,476			255,929
Marketable securities (including restricted securities of $45 at September 30, 2011 and December 31, 2010)	503,429			636,531
Goodwill	452,914			452,914
Other intangible assets, net	49,702			62,456
Deferred income tax assets	76,747			75,226
Other assets	9,210			11,153
Total assets	$	2,301,957		$	2,352,676
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	30,349		$	26,375
Accrued expenses and other current liabilities	85,265			94,661
Deferred revenue	23,201			23,808
Accrued restructuring	63			307
Total current liabilities	138,878			145,151
Other liabilities	38,013			26,278
Deferred revenue	3,055			3,642
Total liabilities	179,946			175,071
Commitments, contingencies and guarantees (Note 15)
Stockholders’ equity:
Preferred stock, $0.01 par value; 5,000,000 shares authorized; 700,000 shares designated as Series A Junior Participating Preferred Stock; no shares issued or outstanding	—			—
Common stock, $0.01 par value; 700,000,000 shares authorized; 194,682,252 shares issued and 179,519,564 shares outstanding at September 30, 2011 and 192,383,121 shares issued and 186,603,380 shares outstanding at December 31, 2010	1,947			1,924
Additional paid-in capital	5,025,797			4,970,278
Accumulated other comprehensive income (loss)	(9,299		)	(5,741		)
Treasury stock, at cost, 15,162,688 shares at September 30, 2011 and 5,779,741 shares at December 31, 2010	(406,662		)	(158,261		)
Accumulated deficit	(2,489,772		)	(2,630,595		)
Total stockholders’ equity	2,122,011			2,177,605
Total liabilities and stockholders’ equity	$	2,301,957		$	2,352,676

The accompanying notes are an integral part of the consolidated financial statements.

3

AKAMAI TECHNOLOGIES, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(UNAUDITED)

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2011			2010			2011			2010
	(In thousands, except per share data)
Revenues	$	281,856		$	253,551		$	834,798		$	738,898
Costs and operating expenses:
Cost of revenues	93,284			77,812			271,999			217,126
Research and development	13,542			14,235			37,142			40,991
Sales and marketing	54,520			55,603			160,722			160,474
General and administrative	50,834			42,729			140,710			125,986
Amortization of other intangible assets	4,185			4,130			12,754			12,390
Restructuring charge	158			—			158			—
Total costs and operating expenses	216,523			194,509			623,485			556,967
Income from operations	65,333			59,042			211,313			181,931
Interest income	2,703			2,809			8,675			9,321
Interest expense	—			(222		)	—			(1,549		)
Other expense, net	(188		)	(1,366		)	(1,330		)	(1,319		)
Gain on investments, net	299			49			383			297
Loss on early extinguishment of debt	—			—			—			(294		)
Income before provision for income taxes	68,147			60,312			219,041			188,387
Provision for income taxes	25,862			20,603			78,218			69,677
Net income	$	42,285		$	39,709		$	140,823		$	118,710
Net income per weighted average share:
Basic	$	0.23		$	0.22		$	0.76		$	0.68
Diluted	$	0.23		$	0.21		$	0.74		$	0.63
Shares used in per share calculations:
Basic	183,085			181,457			185,515			175,292
Diluted	185,704			191,271			189,089			190,254

The accompanying notes are an integral part of the consolidated financial statements.

4

AKAMAI TECHNOLOGIES, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(UNAUDITED)

	For the Nine Months Ended September 30,
	2011			2010
	(In thousands)
Cash flows from operating activities:
Net income	$	140,823		$	118,710
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	124,228			104,113
Stock-based compensation expense	42,465			57,973
Provision for deferred income taxes, net	20,906			66,898
Amortization of deferred financing costs	—			457
Provision for doubtful accounts	1,236			2,107
Excess tax benefits from stock-based compensation	(11,460		)	(22,379		)
Loss on investments and disposal of property and equipment, net	(172		)	(223		)
Non-cash portion of loss on early extinguishment of debt	—			294
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(7,821		)	(6,342		)
Prepaid expenses and other current assets	(78		)	(41,393		)
Accounts payable, accrued expenses and other current liabilities	(5,268		)	20,573
Deferred revenue	(1,386		)	(7,126		)
Accrued restructuring	(180		)	(167		)
Other non-current assets and liabilities	13,355			(1,399		)
Net cash provided by operating activities	316,648			292,096
Cash flows from investing activities:
Cash paid for acquisition of business, net of cash acquired	(550		)	(12,210		)
Purchases of property and equipment	(105,769		)	(119,591		)
Capitalization of internal-use software costs	(30,523		)	(23,754		)
Purchases of short- and long-term marketable securities	(727,453		)	(900,087		)
Proceeds from sales of short- and long-term marketable securities	545,568			538,645
Proceeds from maturities of short- and long-term marketable securities	354,552			250,537
Increase in other investments	—			(500		)
Proceeds from the sale of property and equipment	135			52
Decrease in restricted investments held for security deposits	221			8
Net cash provided by (used in) investing activities	36,181			(266,900		)
Cash flows from financing activities:
Proceeds from the issuance of common stock under stock option and employee stock purchase plans	13,305			31,946
Excess tax benefits from stock-based compensation	11,460			22,379
Employee taxes paid related to net share settlement of equity awards	(5,680		)	—
Repurchases of common stock	(247,738		)	(65,126		)
Net cash used in financing activities	(228,653		)	(10,801		)
Effects of exchange rate changes on cash and cash equivalents	(443		)	1,867
Net increase in cash and cash equivalents	123,733			16,262
Cash and cash equivalents at beginning of period	231,866			181,305
Cash and cash equivalents at end of period	$	355,599		$	197,567
Supplemental disclosure of cash flow information:
Cash paid for income taxes	$	26,530		$	23,829
Cash paid for interest	—			967
Non-cash financing and investing activities:
Capitalization of stock-based compensation, net of impairments	$	5,406		$	5,597
Common stock issued upon conversion of 1% convertible senior notes	—			141,135
Common stock returned upon settlement of escrow claims related to prior business acquisitions	—			(125		)

The accompanying notes are an integral part of the consolidated financial statements.

5

AKAMAI TECHNOLOGIES, INC.

NOTES TO UNAUDITED CONSOLIDATED

FINANCIAL STATEMENTS

1. Nature of Business and Basis of Presentation

Akamai Technologies, Inc. (“Akamai” or the “Company”) provides services for accelerating and improving the delivery of content and applications over the Internet. Akamai’s globally distributed platform comprises thousands of servers in hundreds of networks in approximately 75 countries. The Company was incorporated in Delaware in 1998 and is headquartered in Cambridge, Massachusetts. Akamai currently operates in one industry segment: providing services for accelerating and improving delivery of content and applications over the Internet.

The accompanying interim consolidated financial statements are unaudited and have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information. These financial statements include the accounts of Akamai and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated in the accompanying financial statements.

Certain information and footnote disclosures normally included in the Company’s annual audited consolidated financial statements and accompanying notes have been condensed or omitted in these interim financial statements. Accordingly, the unaudited consolidated financial statements included herein should be read in conjunction with the audited consolidated financial statements and accompanying notes included in Akamai’s annual report on Form 10-K for the year ended December 31, 2010, filed with the Securities and Exchange Commission on March 1, 2011.

The results of operations presented in this quarterly report on Form 10-Q are not necessarily indicative of the results of operations that may be expected for any future periods. In the opinion of management, these unaudited consolidated financial statements include all adjustments and accruals, consisting only of normal recurring adjustments that are necessary for a fair statement of the results of all interim periods reported herein.

2. Recent Accounting Pronouncements

In December 2010, the Financial Accounting Standards Board (“FASB”) issued an accounting standard update for business combinations specifically related to the disclosure of supplementary pro forma information for business combinations. This guidance specifies that pro forma disclosures should be reported as if the business combination that occurred during the current year had occurred as of the beginning of the comparable prior annual reporting period, and the pro forma disclosures must include a description of material, nonrecurring pro forma adjustments. This standard was effective for business combinations with an acquisition date of January 1, 2011 or later. The adoption of the guidance did not have an impact on the Company's financial position or results of operations.

In May 2011, the FASB issued amended guidance and disclosure requirements for fair value measurements. This guidance provides a consistent definition of fair value and ensures that the fair value measurement and disclosure requirements are similar between U.S. GAAP and international financial reporting standards. The guidance changes certain fair value measurement principles and enhances the disclosure requirements particularly for Level 3 fair value measurements. This standard will be effective for interim and annual periods beginning after December 15, 2011 and will be applied prospectively. The adoption of the guidance is not expected to have a material impact on the Company's consolidated financial statements.

In June 2011, the FASB issued amended disclosure requirements for the presentation of comprehensive income. The amended guidance eliminates the option to present components of other comprehensive income (“OCI”) as part of the statement of changes in equity. Under the amended guidance, all changes in OCI are to be presented either in a single continuous statement of comprehensive income or in two separate but consecutive financial statements. The changes will be effective January 1, 2012 and early adoption is permitted. There will be no impact to the Company's consolidated financial results as the amendments relate only to changes in financial statement presentation.

In September 2011, the FASB issued amended guidance that will simplify how entities test goodwill for impairment. Under the amended guidance, after assessment of certain qualitative factors, if it is determined to be more likely than not that the fair value of a reporting unit is less than its carrying amount, entities must perform the quantitative analysis of the goodwill impairment test. Otherwise, the quantitative test(s) are optional. The guidance is effective January 1, 2012 with early adoption permitted. The adoption of the guidance is not expected to have a material impact on the Company's financial position or results of operations.

6

3. Business Acquisition

In June 2010, the Company acquired substantially all of the assets and liabilities of Velocitude LLC (“Velocitude”), in exchange for payment of approximately $12.0 million in cash. In addition, the Company recorded a liability of $2.4 million for contingent consideration related to the expected achievement of certain post-closing milestones. In May 2011, the Company made a final payment of $0.4 million related to the contingent consideration. The acquisition of substantially all of the assets of Velocitude was intended to further Akamai’s strategic position in the mobile market and was accounted for using the purchase method of accounting. The Company allocated $11.6 million of the cost of the acquisition to goodwill and $2.8 million to other intangible assets.

4. Marketable Securities and Investments

The Company accounts for financial assets and liabilities in accordance with a fair value measurement accounting standard. The accounting standard provides a framework for measuring fair value under GAAP and requires expanded disclosures regarding fair value measurements. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The accounting standard also establishes a fair value hierarchy that requires an entity to maximize the use of observable inputs, where available, and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair value:

Level 1 — Quoted prices in active markets for identical assets or liabilities.

Level 2 — Observable inputs, other than Level 1 prices, such as quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets and liabilities in markets that are inactive, or other inputs that are observable or can be corroborated by observable market data.

Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities, including certain pricing models, discounted cash flow methodologies and similar techniques.

The following is a summary of marketable securities held at September 30, 2011 and December 31, 2010 (in thousands):

7

			Gross Unrealized							Classification on Balance Sheet
As of September 30, 2011	Cost		Gains		Losses			Aggregate Fair Value		Short-term Marketable Securities		Long-term Marketable Securities
Available-for-sale securities:
Certificates of deposit	$	96	$	—	$	—		$	96	$	51	$	45
Commercial paper	59,989		—		(23		)	59,966		59,966		—
U.S. corporate debt securities	539,365		867		(995		)	539,237		261,922		277,315
U.S. government agency obligations	117,227		102		(7		)	117,322		10,028		107,294
Auction rate securities	135,350		—		(16,575		)	118,775		—		118,775
	$	852,027	$	969	$	(17,600	)	$	835,396	$	331,967	$	503,429
			Gross Unrealized							Classification on Balance Sheet
As of December 31, 2010	Cost		Gains		Losses			Aggregate Fair Value		Short-term Marketable Securities		Long-term Marketable Securities
Available-for-sale securities:
Certificates of deposit	$	96	$	—	$	—		$	96	$	51	$	45
Commercial paper	59,912		34		(2		)	59,944		59,944		—
U.S. corporate debt securities	651,855		1,416		(736		)	652,535		301,625		350,910
U.S. government agency obligations	161,722		102		(119		)	161,705		13,385		148,320
Auction rate securities	150,800		—		(13,544		)	137,256		—		137,256
	$	1,024,385	$	1,552	$	(14,401	)	$	1,011,536	$	375,005	$	636,531

Unrealized gains and unrealized temporary losses on investments classified as available-for-sale are included within accumulated other comprehensive income (loss). Upon realization, those amounts are reclassified from accumulated other comprehensive income (loss) to gain (loss) on investments, net in the statement of operations. Realized gains and losses and gains and losses on other-than-temporary impairments on investments are reflected in the income statement as gain (loss) on investments, net. As of September 30, 2011, the Company had recorded $135.4 million of auction rate securities ("ARS") at cost with gross unrealized losses that have been in a continuous loss position for more than 12 months.

The following table details the fair value measurements within the fair value hierarchy of the Company’s financial assets, including investments and cash equivalents, at September 30, 2011 and December 31, 2010 (in thousands):

8

			Fair Value Measurements at Reporting
	Total Fair Value at		Date Using
	September 30, 2011		Level 1		Level 2		Level 3
Money market funds	$	21,057	$	21,057	$	—	$	—
Certificates of deposit	96		96		—		—
Commercial paper	195,707		—		195,707		—
U.S. corporate debt securities	570,062		—		570,062		—
U.S. government agency obligations	117,322		—		117,322		—
Auction rate securities	118,775		—		—		118,775
	$	1,023,019	$	21,153	$	883,091	$	118,775
			Fair Value Measurements at Reporting
	Total Fair Value at		Date Using
	December 31, 2010		Level 1		Level 2		Level 3
Money market funds	$	55,648	$	55,648	$	—	$	—
Certificates of deposit	96		96		—		—
Commercial paper	59,944		—		59,944		—
U.S. corporate debt securities	652,535		—		652,535		—
U.S. government agency obligations	161,705		—		161,705		—
Auction rate securities	137,256		—		—		137,256
	$	1,067,184	$	55,744	$	874,184	$	137,256

The following tables reflect the activity for the Company’s major classes of financial assets measured at fair value using Level 3 inputs, consisting solely of ARS, for the nine month periods ended September 30, 2011 and 2010 (in thousands):

	Auction Rate Securities
Balance as of December 31, 2010	$	137,256
Redemptions of securities	(15,450		)
Unrealized loss included in accumulated other comprehensive income (loss), net	(3,031		)
Balance as of September 30, 2011	$	118,775

	Auction Rate Securities			Put Option Related to Auction Rate Securities			Total
Balance as of December 31, 2009	$	244,505		$	9,614		$	254,119
Redemptions of securities	(109,700		)	—			(109,700		)
Unrealized gain included in accumulated other comprehensive income (loss), net	5,721			—			5,721
Unrealized gain on auction rate securities included in the statement of operations	9,614			—			9,614
Unrealized loss on other investment-related assets included in the statement of operations	—			(9,614		)	(9,614		)
Balance as of September 30, 2010	$	150,140		$	—		$	150,140

As of September 30, 2011, the Company had grouped money market funds and certificates of deposit using a Level 1 valuation because market prices for such investments are readily available in active markets. As of September 30,

9

2011, the Company had grouped commercial paper, U.S. government agency obligations and U.S. corporate debt securities using a Level 2 valuation because quoted prices for identical or similar assets are available in markets that are inactive. As of September 30, 2011, the Company’s assets grouped using a Level 3 valuation consisted of ARS.

Historically, the carrying value (par value) of the Company’s ARS holdings approximated fair market value due to the resetting of variable interest rates in a “Dutch auction” process. Beginning in mid-February 2008 and continuing throughout the period ended September 30, 2011, however, the auctions for ARS held by the Company failed. As a result, the interest rates on ARS reset to the maximum rate per the applicable investment offering statements. The Company will not be able to liquidate affected ARS until a future auction on these investments is successful, a buyer is found outside the auction process, the securities are called or refinanced by the issuer, or the securities mature. Due to these liquidity issues, the Company used a discounted cash flow analysis to determine the estimated fair value of these investments. The discounted cash flow analysis considered the timing of expected future successful auctions, the impact of extended periods of maximum interest rates, collateralization of underlying security investments and the creditworthiness of the issuer. The discounted cash flow analysis as of September 30, 2011 assumed a weighted average discount rate of 4.11% and expected term of five years. The discount rate was determined using a proxy based upon the current market rates for recent debt offerings. The expected term was based on management’s estimate of future liquidity. As a result, as of September 30, 2011, the Company has estimated an aggregate loss of $16.6 million, which was related to the impairment of ARS deemed to be temporary and included in accumulated other comprehensive income (loss) within stockholders’ equity. The discounted cash flow analysis performed as of December 31, 2010 for ARS assumed a weighted average discount rate of 3.21% and expected term of five years. As a result, as of that date, the Company estimated an aggregate loss of $13.5 million, which was related to the impairment of ARS deemed to be temporary and included in accumulated other comprehensive income (loss) within stockholders’ equity.

The ARS the Company holds are primarily AAA-rated bonds, most of which are collateralized by federally guaranteed student loans as part of the Federal Family Education Loan Program through the U.S. Department of Education. The Company believes the quality of the collateral underlying these securities will enable it eventually to recover the Company’s principal balance.

Despite the failed auctions, the Company has continued to receive cash flows in the form of specified interest payments from the issuers of ARS. In addition, the Company does not believe it will be required to sell the ARS prior to a recovery of par value and currently intends to hold the investments until such time because it believes it has sufficient cash, cash equivalents and other marketable securities on-hand and from expected operating cash flows to fund its operations.

As of September 30, 2011 and December 31, 2010, the Company classified $118.8 million and $137.3 million, respectively, of ARS as long-term marketable securities on its consolidated balance sheet due to management’s estimate of its inability to liquidate these investments within the succeeding twelve months.

Contractual maturities of the Company’s marketable securities held at September 30, 2011 and December 31, 2010 were as follows (in thousands):

	September 30, 2011		December 31, 2010
Available-for-sale securities:
Due in 1 year or less	$	331,967	$	375,005
Due after 1 year through 5 years	384,654		499,275
Due after 10 years	118,775		137,256
	$	835,396	$	1,011,536

5. Accounts Receivable

Net accounts receivable consisted of the following (in thousands):

10

	September 30, 2011			December 31, 2010
Trade accounts receivable	$	127,210		$	116,212
Unbilled accounts	61,131			64,386
Gross accounts receivable	188,341			180,598
Allowance for doubtful accounts	(2,127		)	(1,329		)
Reserve for cash-basis customers	(3,549		)	(3,903		)
Total accounts receivable reserves	(5,676		)	(5,232		)
Accounts receivable, net	$	182,665		$	175,366

The Company’s accounts receivable balance includes unbilled amounts that represent revenues recorded for customers that are typically billed monthly in arrears. The Company records reserves against its accounts receivable balance. These reserves consist of allowances for doubtful accounts and reserves for cash-basis customers. Increases and decreases in the allowance for doubtful accounts are included as a component of general and administrative expenses. The Company’s reserve for cash-basis customers increases as services are provided to customers where collection is no longer assured. Increases to the reserve for cash-basis customers are recorded as reductions of revenues. The reserve decreases and revenue is recognized when and if cash payments are received.

Estimates are used in determining these reserves and are based upon the Company’s review of outstanding balances on a customer-specific, account-by-account basis. The allowance for doubtful accounts is based upon a review of customer receivables from prior sales with collection issues where the Company no longer believes that the customer has the ability to pay for services previously provided. The Company also performs ongoing credit evaluations of its customers. If such an evaluation indicates that payment is no longer reasonably assured for services provided, any future services provided to that customer will result in the creation of a cash-basis reserve until the Company receives consistent payments. The Company does not have any off-balance sheet credit exposure related to its customers.

6. Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (in thousands):

	September 30, 2011		December 31, 2010
Payroll and other related benefits	$	28,097	$	51,591
Bandwidth and co-location	21,189		21,787
Property, use and other taxes	29,806		15,849
Professional service fees	4,292		2,678
Contingent consideration	—		990
Other	1,881		1,766
Total	$	85,265	$	94,661

7. Net Income per Share

Basic net income per share is computed using the weighted average number of common shares outstanding during the applicable period. Diluted net income per share is computed using the weighted average number of common shares outstanding during the period, plus the dilutive effect of potential common stock. Potential common stock consists of shares issuable pursuant to stock options, deferred stock units, restricted stock units (“RSUs”) and convertible notes.

The following table sets forth the components used in the computation of basic and diluted net income per common share (in thousands, except per share data):

11

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2011		2010		2011		2010
Numerator:
Net income	$	42,285	$	39,709	$	140,823	$	118,710
Add back of interest expense on 1% convertible senior notes (net of taxes)	—		146		—		964
Numerator for diluted net income per common share	$	42,285	$	39,855	$	140,823	$	119,674
Denominator:
Denominator for basic net income per common share	183,085		181,457		185,515		175,292
Effect of dilutive securities:
Stock options	1,928		3,988		2,698		3,807
Effect of escrow contingencies	—		339		—		339
RSUs and deferred stock units	691		1,399		876		1,332
Assumed conversion of 1% convertible senior notes	—		4,088		—		9,484
Denominator for diluted net income per common share	185,704		191,271		189,089		190,254
Basic net income per common share	$	0.23	$	0.22	$	0.76	$	0.68
Diluted net income per common share	$	0.23	$	0.21	$	0.74	$	0.63

Outstanding options to acquire an aggregate of 4.1 million and 0.9 million shares of common stock for the three months ended September 30, 2011 and 2010, respectively, were excluded from the calculation of diluted earnings per share because the exercise prices of these stock options were greater than the average market price of the Company’s common stock during the respective periods. As a result, the effect of including these options would be anti-dilutive. Similarly, outstanding options to acquire an aggregate of 2.8 million and 1.4 million shares of common stock for the nine months endedSeptember 30, 2011 and 2010, respectively, were excluded from the calculation of diluted earnings per share because the exercise prices of the stock options were greater than the average market price of the Company's common stock during the respective periods. Additionally, 2.8 million and 3.0 million shares of common stock issuable in respect of outstanding performance-based RSUs were excluded from the computation of diluted net income per share for the three and nine months ended September 30, 2011, respectively, and 3.1 million and 3.3 million shares of common stock issuable in respect of outstanding performance-based RSUs were excluded from the computation of diluted net income per share for the three and nine months endedSeptember 30, 2010, respectively, because the performance conditions had not been met as of those dates.

The calculation of assumed proceeds used to determine the diluted weighted average shares outstanding under the treasury stock method in the periods presented was adjusted by tax windfalls and shortfalls associated with all of the Company’s outstanding stock awards. Such windfalls and shortfalls are computed by comparing the tax deductible amount of outstanding stock awards to their grant date fair values and multiplying the results by the applicable statutory tax rate. A positive result creates a windfall, which increases the assumed proceeds, and a negative result creates a shortfall, which reduces the assumed proceeds.

8. Stockholders’ Equity

Stock Repurchase Program

On April 29, 2009, the Company announced that its Board of Directors had authorized a stock repurchase program permitting purchases of up to $100.0 million of the Company’s common stock from time to time on the open market or in privately negotiated transactions. On April 28, 2010, the Company announced that its Board of Directors had authorized an extension of the stock repurchase program permitting purchases of an additional $150.0 million of the Company’s common stock from time to time over the next twelve months commencing in May 2010 on the open market or in privately negotiated transactions. The unused balance from the May 2010 extension was not carried forward for future purchases. On April 19, 2011, the Company’s Board of Directors authorized a new program authorizing up to an additional $150.0 million of repurchases over the next twelve months commencing in May 2011. On August 8, 2011, the Company's Board of Directors authorized an additional $250.0 million of stock repurchases over the twelve-month

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period that commenced in May 2011. The total authorized funding for stock repurchases in that twelve-month period is now $400.0 million. The timing and amount of any shares repurchased will be determined by the Company’s management based on its evaluation of market conditions and other factors. Repurchases may also be made under a Rule 10b5-1 plan, which would permit the Company to repurchase shares when the Company might otherwise be precluded from doing so under insider trading laws. Subject to applicable securities laws, the Company may choose to suspend or discontinue the repurchase program at any time.

During the three and nine months endedSeptember 30, 2011, the Company repurchased 6.8 million and 9.4 million shares, respectively, of its common stock for $155.1 million and $248.4 million, respectively. During the three and nine months endedSeptember 30, 2010, the Company repurchased 0.5 million and 1.9 million shares, respectively, of its common stock for $22.7 million and $65.1 million, respectively. As of September 30, 2011, the Company had $206.0 million remaining available for future purchases of shares under the current repurchase program.

Stock-Based Compensation Expense

The following table summarizes the components of total stock-based compensation expense included in the Company’s consolidated statements of operations for the three and nine months endedSeptember 30, 2011 and 2010 (in thousands):

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2011			2010			2011			2010
Stock-based compensation expense by type of award:
Stock options	$	3,312		$	3,843		$	10,518		$	11,240
Deferred stock units	—			—			1,885			1,885
RSUs	12,628			15,615			31,276			47,208
Shares issued under the Employee Stock Purchase Plan	1,142			1,049			4,192			3,237
Amounts capitalized as internal-use software	(1,941		)	(1,918		)	(5,406		)	(5,597		)
Total stock-based compensation before income taxes	15,141			18,589			42,465			57,973
Less: Income tax benefit	(5,746		)	(6,350		)	(15,119		)	(21,349		)
Total stock-based compensation, net of taxes	$	9,395		$	12,239		$	27,346		$	36,624
Effect of stock-based compensation on income by line item:
Cost of revenues	$	634		$	702		$	1,779		$	2,110
Research and development expense	2,629			3,687			7,515			11,222
Sales and marketing expense	6,951			8,862			19,112			26,662
General and administrative expense	4,927			5,338			14,059			17,979
Provision for income taxes	(5,746		)	(6,350		)	(15,119		)	(21,349		)
Total cost related to stock-based compensation, net of taxes	$	9,395		$	12,239		$	27,346		$	36,624

In addition to the amounts of stock-based compensation reported in the table above, the Company’s consolidated statements of operations for the three and nine months ended September 30, 2011 also included stock-based compensation reflected as a component of amortization of capitalized internal-use software; such additional stock-based compensation for such period was $1.6 million and $5.6 million, respectively, before taxes. The Company's consolidated statements of operations for the three and nine months endedSeptember 30, 2010 also included stock-based compensation reflected as a component of amortization of capitalized internal-use software; such additional stock-based compensation for such period was $1.8 million and $5.5 million, respectively, before taxes.

9. Comprehensive Income

The following table presents the calculation of comprehensive income and its components (in thousands):

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	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2011			2010			2011			2010
Net income	$	42,285		$	39,709		$	140,823		$	118,710
Other comprehensive income (loss):
Foreign currency translation adjustments	(5,588		)	6,581			(1,200		)	1,701
Change in unrealized gain (loss) on investments, net	(6,517		)	1,874			(3,840		)	5,864
Income tax expense related to unrealized gain (loss) on investments, net	2,507			(726		)	1,482			(2,272		)
Other comprehensive income (loss)	(9,598		)	7,729			(3,558		)	5,293
Comprehensive income	$	32,687		$	47,438		$	137,265		$	124,003

Accumulated other comprehensive income (loss) consisted of (in thousands):

	September 30, 2011			December 31, 2010
Foreign currency translation adjustment	$	903		$	2,103
Net unrealized (loss) gain on investments, net of taxes of $6,487 at September 30, 2011 and $5,005 at December 31, 2010	(10,202		)	(7,844		)
Total accumulated other comprehensive income (loss)	$	(9,299	)	$	(5,741	)

10. Goodwill and Other Intangible Assets

The Company recorded goodwill and other intangible assets as a result of business acquisitions that occurred between 2000 and 2010. The Company also acquired license rights from the Massachusetts Institute of Technology in 1999.

Other intangible assets that are subject to amortization consist of the following (in thousands):

	September 30, 2011
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Completed technology	$	36,731	$	(21,173	)	$	15,558
Customer relationships	88,700		(57,940		)	30,760
Non-compete agreements	8,340		(4,970		)	3,370
Trademarks and trade names	800		(786		)	14
Acquired license rights	490		(490		)	—
Total	$	135,061	$	(85,359	)	$	49,702

	December 31, 2010
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Completed technology	$	36,731	$	(16,520	)	$	20,211
Customer relationships	88,700		(50,832		)	37,868
Non-compete agreements	8,340		(4,070		)	4,270
Trademarks and trade names	800		(693		)	107
Acquired license rights	490		(490		)	—
Total	$	135,061	$	(72,605	)	$	62,456

Aggregate expense related to amortization of other intangible assets for the three months ended September 30, 2011 and 2010 was $4.2 million and $4.1 million, respectively. For the nine months endedSeptember 30, 2011 and

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2010, aggregate expense related to the amortization of other intangible assets was $12.8 million and $12.4 million, respectively. Based on the Company’s other intangible assets as of September 30, 2011, aggregate expense related to amortization of other intangible assets is expected to be $4.2 million for the remainder of 2011, and $15.9 million, $13.1 million, $7.6 million and $5.1 million for fiscal years 2012, 2013, 2014 and 2015, respectively.

11. Concentration of Credit Risk

Financial instruments that subject the Company to credit risk consist of cash and cash equivalents, marketable securities and accounts receivable. The Company maintains the majority of its cash, cash equivalents and marketable securities balances principally with domestic financial institutions that the Company believes are of high credit standing.

At September 30, 2011 and December 31, 2010, the Company held ARS, with an estimated fair value of $118.8 million and $137.3 million, respectively, that have experienced failed auctions preventing the Company from liquidating those investments. Based on its ability to access its cash and short-term investments and its expected cash flows, the Company does not anticipate the current lack of liquidity with respect to these ARS to have a material impact on its financial condition or results of operations during 2011. As of September 30, 2011, the Company had recorded a pre-tax cumulative unrealized loss of $16.6 million related to the temporary impairment of the ARS, which was included in accumulated other comprehensive income (loss) withing stockholders' equity on its consolidated balance sheet. See Note 4.

Concentrations of credit risk with respect to accounts receivable are limited to certain customers to which the Company makes substantial sales. The Company’s customer base consists of a large number of geographically dispersed customers diversified across numerous industries. To reduce risk, the Company routinely assesses the financial strength of its customers. Based on such assessments, the Company believes that its accounts receivable credit risk exposure is limited. As of September 30, 2011 and December 31, 2010, one customer accounted for more than 10% of the Company's accounts receivable. The Company believes that, at September 30, 2011, concentration of credit risk related to accounts receivable was not significant.

12. Segment and Geographic Information

Akamai’s chief decision-maker, as defined under the authoritative guidance that discusses disclosures about segments of an enterprise and related information, is the Chief Executive Officer and the executive management team. As of September 30, 2011, Akamai operated in one industry segment: providing services for accelerating and improving the delivery of content and applications over the Internet. The Company is not organized by market and is managed and operated as one business. A single management team that reports to the Chief Executive Officer comprehensively manages the entire business. The Company does not operate any material separate lines of business or separate business entities with respect to its services. Accordingly, the Company does not accumulate discrete financial information with respect to separate product lines and does not have separately reportable segments as defined in the guidance.

The Company deploys its servers into networks worldwide. As of September 30, 2011, the Company had $184.7 million and $100.8 million of property and equipment, net of accumulated depreciation, located in the United States and in foreign locations, respectively. As of December 31, 2010, the Company had $174.9 million and $81.0 million of property and equipment, net of accumulated depreciation, located in the United States and in foreign locations, respectively.

Akamai sells its services through a direct sales force and through channel partners located both in the United States and abroad. The following table summarizes the percentage of the Company's revenues derived from operations outside of the United States:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2011		2010		2011		2010
Revenues derived from outside of the United States	29	%	28	%	29	%	28	%
Revenues derived from Europe	18	%	16	%	18	%	17	%

No single country outside the United States accounted for 10% or more of revenues during these periods. For each of the three- and nine- month periods ended September 30, 2011 and 2010, no customer accounted for 10% or

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more of total revenues.

13. Income Taxes

The Company’s effective income tax rate, including discrete items, was 35.7% and 37.0% for the nine months endedSeptember 30, 2011 and 2010, respectively. The effective income tax rate is based upon estimated income for the year, the estimated composition of the income in different jurisdictions and discrete adjustments, if any, in the applicable quarterly periods including settlements of tax audits or assessments, the resolution or identification of tax position uncertainties, and acquisitions of other companies. The discrete items also include the tax effect of disqualifying dispositions of incentive stock options and shares purchased under the Company's Employee Stock Purchase Plan. For each of the nine months endedSeptember 30, 2011 and September 30, 2010, the effective income tax rate was higher than the federal statutory tax rate mainly due to the effects of accounting for stock-based compensation in accordance with the authoritative guidance for share-based payments, and state income tax expense.

14. Forward Currency Contracts

Substantially all of the Company's foreign subsidiaries use the currency of the country in which it is located as its functional currency. Assets and liabilities are translated at exchange rates prevailing at the balance sheet dates. Revenues, costs and expenses are translated at the average exchange rates for the reported period. Gains and losses resulting from translation are recorded as a component of accumulated other comprehensive income (loss) within stockholders' equity. Gains and losses resulting from foreign currency transactions are recognized as other expense, net within the statement of operations.

The Company enters into short-term foreign currency forward contracts to offset the foreign exchange gains and losses generated by the re-measurement of certain assets and liabilities recorded in non-functional currencies. Changes in the fair value of these derivatives, as well as re-measurement gains and losses, are recognized in current earnings in other expense, net. As of September 30, 2011, the fair value of the forward currency contracts and the underlying net loss for the three and nine months endedSeptember 30, 2011 were deemed to be immaterial.

The Company's foreign currency forward contracts include credit risk to the extent that its counterparties may be unable to meet the terms of the agreements. The Company minimizes counterparty credit (or repayment) risk by entering into transactions only with major financial institutions of investment grade credit rating.

15. Commitments, Contingencies and Guarantees

Operating Lease Commitments

The Company leases its facilities under non-cancelable operating leases. These operating leases expire at various dates through December 2019 and generally require the payment of real estate taxes, insurance, maintenance and operating costs.

The expected minimum aggregate future obligations under non-cancelable leases as of September 30, 2011 were as follows (in thousands):

	Operating Leases
Remaining 2011	$	6,218
2012	23,682
2013	22,079
2014	20,919
2015	19,447
Thereafter	56,288
Total	$	148,633

Purchase Commitments

The Company has long-term commitments for bandwidth usage and co-location services with various network

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and Internet service providers. For the remainder of 2011 and for the years ending December 31, 2012, 2013, 2014 and 2015, the minimum commitments pursuant to these contracts in effect as of September 30, 2011, are approximately $37.0 million, $51.3 million, $8.6 million, $0.3 million and $0.1 million, respectively. In addition, as of September 30, 2011, the Company had entered into purchase orders with various vendors for aggregate purchase commitments of $50.6 million, which are expected to be paid over the next twelve months.

Litigation

Between July 2, 2001 and November 7, 2001, purported class action lawsuits seeking monetary damages were filed in the U.S. District Court for the Southern District of New York against the Company as well as against the underwriters of its October 28, 1999 initial public offering of common stock. The complaints were filed allegedly on behalf of persons who purchased the Company’s common stock during different time periods, all beginning on October 28, 1999 and ending on various dates. The complaints are similar and allege violations of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, primarily based on the allegation that the underwriters received undisclosed compensation in connection with the Company’s initial public offering. On April 19, 2002, a single consolidated amended complaint was filed, reiterating in one pleading the allegations contained in the previously filed separate actions. The consolidated amended complaint defines the alleged class period as October 28, 1999 through December 6, 2000. A Special Litigation Committee of the Company’s Board of Directors authorized management to negotiate a settlement of the pending claims substantially consistent with a Memorandum of Understanding that was negotiated among class plaintiffs, all issuer defendants and their insurers. The parties negotiated a settlement that was subject to approval by the District Court. On February 15, 2005, the Court issued an Opinion and Order preliminarily approving the settlement, provided that the defendants and plaintiffs agree to a modification narrowing the scope of the bar order set forth in the original settlement agreement. On June 25, 2007, the District Court signed an order terminating the settlement. On August 25, 2009, the lead plaintiffs filed a motion for final approval of a new proposed settlement (among plaintiffs, the underwriter defendants, the issuer defendants and the insurers for the issuer defendants), plan of distribution of the settlement fund, and certification of the settlement classes. On October 5, 2009, the District Court issued an opinion and order granting the lead plaintiffs’ motion for final approval of the settlement, approval of the plan of distribution of the settlement fund, and certification of the settlement classes. An order and final judgment was entered on November 4, 2009. Notices of appeal of the District Court’s October 5, 2009 opinion and order have been filed in the United States Court of Appeals for the Second Circuit by certain objecting plaintiffs. If the District Court’s order is upheld on appeal, the Company would have no material liability in connection with this litigation, and the litigation would be resolved. The Company has recorded no liability for this matter as of September 30, 2011.

In addition, on or about October 3, 2007, a purported Akamai shareholder, Vanessa Simmonds, filed a complaint in the U.S. District Court for the Western District of Washington, against the underwriters of its 1999 initial public offering of common stock, alleging violations of Section 16(b) of the Securities Exchange Act of 1934, as amended. The complaint alleges that the combined number of shares of the Company’s common stock beneficially owned by the lead underwriters and certain unnamed officers, directors and principal shareholders exceeded ten percent of its outstanding common stock from the date of the Company’s initial public offering on October 29, 1999, through at least October 28, 2000. The complaint further alleges that those entities and individuals were thus subject to the reporting requirements of Section 16(a) and the short-swing trading prohibition of Section 16(b) and failed to comply with those provisions. The complaint seeks to recover from the lead underwriters any “short-swing profits” obtained by them in violation of Section 16(b). The Company was named as a nominal defendant in the action but has no liability for the asserted claims. None of the Company’s directors or officers serving in such capacities at the time of its initial public offering are currently named as defendants in this action, but there can be no guarantee that the complaint will not be amended or a new complaint or suit filed to name such directors or officers as defendants in this action or another action alleging a violation of the same provisions of the Securities Exchange Act of 1934, as amended. On March 12, 2009, the Court granted a joint motion by the Company and other issuer defendants to dismiss the complaint without prejudice on the grounds that the plaintiff had failed to make an adequate demand on the Company prior to filing her complaint. In its order, the Court stated it would not permit the plaintiff to amend her demand letters while pursuing her claims in the litigation.

Because the Court dismissed the case on the grounds that it lacked subject matter jurisdiction, it did not specifically reach the issue of whether the plaintiff’s claims were barred by the applicable statute of limitations. However, the Court also granted a Joint Motion to Dismiss by the underwriter defendants in the action with respect to cases involving non-

17

moving issuers, holding that the cases were barred by the applicable statute of limitations because the issuers’ shareholders had notice of the potential claims more than five years prior to filing suit. Ms. Simmonds appealed. On December 2, 2010, the Ninth Circuit Court of Appeals affirmed the District Court’s decision to dismiss the moving issuers’ cases (including the Company’s) on the grounds that plaintiff’s demand letters were insufficient to put the issuers on notice of the claims asserted against them and further ordered that the dismissals be made with prejudice. The Ninth Circuit, however, reversed and remanded the District Court’s decision on the underwriters’ motion to dismiss as to the claims arising from the non-moving issuers’ IPOs, finding plaintiff’s claims were not time-barred under the applicable statute of limitations. On January 18, 2011, the Ninth Circuit denied various parties’ petitions for rehearing and for rehearing en banc but stayed its rulings to allow for appeals to the United States Supreme Court. On April 5, 2011, Ms. Simmonds filed a Petition for Writ of Certiorari with the U.S. Supreme Court seeking reversal of the Ninth Circuit's decision relating to the adequacy of the pre-suit demand.  On April 15, 2011, underwriter defendants filed a Petition for Writ of Certiorari with the U.S. Supreme Court seeking reversal of the Ninth Circuit's decision relating to the statute of limitation issue.  On June 27, 2011, the Supreme Court denied Simmonds' petition regarding the demand issue and granted the underwriters' petition relating to the statute of limitations issue. The Company does not expect the results of this action to have a material adverse effect on its business, results of operations or financial condition. The Company has recorded no liability for this matter as of September 30, 2011.

The Company is party to various other litigation matters that management considers routine and incidental to its business. Management does not expect the results of any of these routine actions to have a material adverse effect on the Company’s business, results of operations or financial condition.

Guarantees

The Company has identified guarantees in accordance with the authoritative guidance for guarantor’s accounting and disclosure requirements for guarantees, including indirect guarantees of indebtedness of others, which is an interpretation of previous accounting statements and a rescission of previous guidance. This guidance elaborates on the existing disclosure requirements for most guarantees, including loan guarantees such as standby letters of credit. The guidance also clarifies that at the time an entity issues a guarantee, that entity must recognize an initial liability for the fair value, or market value, of the obligation it assumes under the guarantee and must disclose that information in its interim and annual financial statements. The Company evaluates losses for guarantees under the statement for accounting for contingencies, as interpreted by the guidance for guarantor’s accounting and disclosure requirements for guarantees, including direct guarantees of indebtedness of others. The Company considers such factors as the degree of probability that the Company would be required to satisfy the liability associated with the guarantee and the ability to make a reasonable estimate of the amount of loss. To date, the Company has not encountered material costs as a result of such obligations and has not accrued any liabilities related to such obligations in its financial statements. The fair value of the Company’s outstanding guarantees as of September 30, 2011 was determined to be immaterial.

16. Restructuring

During the three months ended September 30, 2011, the Company recorded $0.2 million as a restructuring charge in connection with an excess and vacated facility under a long-term non-cancelable lease that is scheduled to expire in June 2014. This charge includes estimated future lease payments, less estimated sublease income, for the vacated facility.

The following table summarizes the accrual and usage of the restructuring charges (in millions):

	Leases		Severance			Total
Ending Balance, December 31, 2010	$	—	$	0.3		$	0.3
Restructuring charge	0.2		—			0.2
Cash payments	—		(0.3		)	(0.3		)
Ending Balance, September 30, 2011	$	0.2	$	—		$	0.2

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17. Subsequent Event

On October 24, 2011, David W. Kenny resigned as the Company's president and as a Director. The Board of Directors elected Paul Sagan to the position of president; Mr. Sagan retains his titles of Chief Executive Officer and Director.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

This quarterly report on Form 10-Q, particularly Management’s Discussion and Analysis of Financial Condition and Results of Operations set forth below, and notes to our unaudited consolidated financial statements included herein contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are subject to risks and uncertainties and are based on the beliefs and assumptions of our management as of the date hereof based on information currently available to our management. Use of words such as “believes,” “expects,” “anticipates,” “intends,” “plans,” “estimates,” “should,” “forecasts,” “if,” “continues,” “goal,” “likely” or similar expressions indicates a forward-looking statement. Forward-looking statements are not guarantees of future performance and involve risks, uncertainties and assumptions. Actual results may differ materially from the forward-looking statements we make. See “Risk Factors” elsewhere in this quarterly report on Form 10-Q for a discussion of certain risks associated with our business. We disclaim any obligation to update forward-looking statements as a result of new information, future events or otherwise.

We provide services for accelerating and improving the delivery of content and applications over the Internet. We primarily derive income from the sale of services to customers executing contracts with terms of one year or longer, which we refer to as recurring revenue contracts or long-term contracts. These contracts generally commit the customer to a minimum monthly level of usage with additional charges that apply to actual usage above the monthly minimum. In recent years, however, we have also entered into customer contracts that have minimum usage commitments that are based on quarterly, twelve-month or longer periods. Having a consistent and predictable base level of revenue is important to our financial success. Accordingly, to be successful, we must maintain our base of recurring revenue contracts by eliminating or reducing lost monthly, quarterly or annual recurring revenue due to customer cancellations or terminations and limiting the impact of price reductions reflected in contract renewals and build on that base by adding new customers and increasing the number of services, features and functionalities that our existing customers purchase. At the same time, we must ensure that our expenses do not increase faster than, or at the same rate as, our revenues. Accomplishing these goals requires that we compete effectively in the marketplace on the basis of quality, price and the attractiveness of our services and technology.

Overview of Financial Results

The following sets forth, as a percentage of revenues, consolidated statements of operations data, for the periods indicated:

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	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2011		2010		2011		2010
Revenues	100.0	%	100.0	%	100.0	%	100.0	%
Cost of revenues	33.1		30.7		32.6		29.4
Research and development expense	4.8		5.6		4.4		5.5
Sales and marketing expense	19.3		21.9		19.3		21.7
General and administrative expense	18.0		16.9		16.9		17.1
Amortization of other intangible assets	1.5		1.6		1.5		1.7
Restructuring charge	0.1		—		—		—
Total cost and operating expenses	76.8		76.7		74.7		75.4
Income from operations	23.2		23.3		25.3		24.6
Interest income	1.0		1.1		1.0		1.3
Interest expense	—		(0.1	)	—		(0.2	)
Other expense, net	(0.1	)	(0.5	)	(0.2	)	(0.2	)
Gain on investments, net	0.1		—		0.1		—
Loss on early extinguishment of debt	—		—		—		—
Income before provision for income taxes	24.2		23.8		26.2		25.5
Provision for income taxes	9.2		8.1		9.4		9.4
Net income	15.0	%	15.7	%	16.8	%	16.1	%

We were profitable for the fiscal year 2010 and for the nine months ended September 30, 2011; however, we cannot guarantee continued profitability or profitability for any period in the future at the levels we have recently experienced. We have observed the following trends and events that are likely to have an impact on our financial condition and results of operations in the foreseeable future:

• During each of the first three quarters of 2011, we were able to offset lost committed recurring revenue due to customer cancellations, terminations or price reductions by adding new customers and increasing the number of services, features and functionalities, which we refer to as value-added services, that our existing customers purchase. A continuation of this trend, in conjunction with increased revenues from non-recurring revenue contracts, could lead to increased revenues; however, any such increased revenues would be offset if lower traffic reduces the revenues we earn on a non-committed basis or as a result of further declines in the prices we charge. If we do not offset lost committed revenue in this manner, our revenues will decrease.

• During each of the first three quarters of 2011, unit prices offered to some new and existing customers declined, primarily as a result of competition from new and established competitors. These price reductions primarily impacted customers for which we deliver high volumes of traffic over our network, such as digital media customers. If we continue to experience decreases in unit prices for new and existing customers and we are unable to offset such reductions with increased traffic or enhanced efficiencies in our network or increased sales of value-added services to customers, our revenues and profit margins could decrease.

• Historically, we have experienced seasonal variations in our quarterly revenues attributable to e-commerce services used by our retail customers, with higher revenues in the fourth quarter of the year and lower revenues during the summer months. If this trend continues, our ability to generate quarterly revenue growth on a sequential basis could be impacted.

• In the first three quarters of 2011, we experienced a moderation in the rate of traffic growth in our volume-driven solutions as compared to the first three quarters of 2010. If this trend continues, our ability to generate revenue growth could be adversely impacted.

• During the first three quarters of 2011, we reduced our network bandwidth costs per unit by entering into new supplier contracts with lower pricing and amending existing contracts to take advantage of price reductions offered by our existing suppliers. Additionally, we continued to invest in internal-use software development to improve the performance and efficiency of our network. Due to the increased traffic delivered over our

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network, our total bandwidth costs increased during the first three quarters of 2011 as compared to the same period in 2010. We believe that our overall bandwidth costs will continue to increase as a result of expected higher traffic levels, partially offset by anticipated continued reductions in bandwidth costs per unit. If we do not experience lower per unit bandwidth pricing, or we are unsuccessful at effectively routing traffic over our network through lower cost providers, total network bandwidth costs could increase more than expected during the remainder of 2011.

• In recent quarters, we have seen co-location costs increase and become a higher percentage of total cost of revenues due to the expansion of our network. Continuation of this trend may negatively impact our profitability.

• For the nine months ended September 30, 2011, revenues derived from customers outside the United States accounted for 29% of our total revenues. For the remainder of 2011, we anticipate revenues from such customers as a percentage of our total revenues to be consistent with each of the first three quarters.

• Depreciation and amortization expense related to our network equipment and internal-use software development costs increased during each of the first three quarters of 2011 as compared to the same quarters in 2010. Due to the purchases of network equipment during 2011, we believe that depreciation expense, as well as co-location costs, related to our network equipment will continue to increase during the remainder of 2011. We also expect to continue to enhance and add functionality to our service offerings, which would increase capitalized stock-based compensation expense attributable to employees working on such projects. As a result, we believe that the amortization of internal-use software development costs, which we include in cost of revenues, will be higher in 2011 as compared to 2010. All of these increased costs could negatively affect our profitability.

• For the three and nine months endedSeptember 30, 2011, our stock-based compensation expense was $15.2 million and $42.5 million, respectively, as compared to $18.6 million and $58.0 million, respectively, for the three and nine months endedSeptember 30, 2010. The decrease in stock-based compensation expense for the three and nine months endedSeptember 30, 2011 as compared to the same periods in 2010 was primarily due to management's assessment, as of September 30, 2011, that certain outstanding restricted stock units, or RSUs, with performance-based vesting conditions will not vest because the associated performance targets are unlikely to be met. We expect this trend of lower stock-based compensation expense to continue for the remainder of 2011 as compared to 2010. As of September 30, 2011, our total pre-tax unrecognized compensation costs for stock-based awards were $109.3 million, which we expect to recognize as expense over a weighted average period of 1.3 years through 2015.

• As of September 30, 2011, we held $135.4 million in par value of auction rate securities, which we refer to as ARS. Based upon our cash, cash equivalents and marketable securities balance of $1.2 billion at September 30, 2011 and expected operating cash flows, we do not anticipate that the lack of liquidity associated with our ARS will adversely affect our ability to conduct business during the remainder of 2011. We believe we have the ability to hold these ARS until a recovery of the auction process, a buyer is found outside the auction process, the securities are called or refinanced by the issuer, or until maturity.

• During the nine months endedSeptember 30, 2011, our effective income tax rate was 35.7%. We expect our annual effective income tax rate in 2011 to remain relatively consistent in the fourth quarter of 2011; this expectation does not take into consideration the effect of discrete items such as those relating to stock-based compensation. In 2010, due to our continued utilization of available net operating losses, or NOLs, and tax credit carryforwards, our tax payments were significantly lower than our recorded income tax provision. We expect to utilize substantially all of our tax credit carryforwards in 2011. Once we have done so, the amount of cash tax payments we make will increase over those made in previous years.

Based on our analysis of, among other things, the aforementioned trends and events, as of the date of this quarterly report on Form 10-Q, we expect to continue to generate net income on a quarterly and annual basis during 2011 and 2012; however, our future results are likely to be affected by the factors discussed in the paragraphs above as well as those identified in the section captioned “Risk Factors” and elsewhere in this quarterly report on Form 10-Q, including our ability to:

• increase our revenue by adding customers through long-term contracts and limiting customer cancellations and terminations;

• offset unit price declines for our services with higher volumes of traffic delivered on our network as well as increased sales of our value-added solutions;

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• prevent disruptions to our services and network due to accidents or intentional attacks; and

• maintain our network bandwidth and co-location costs and other operating expenses consistent with our revenues.

As a result, there is no assurance that we will achieve our expected financial objectives, including generating positive net income, in any future period.

Our management’s discussion and analysis of our financial condition and results of operations are based upon our unaudited consolidated financial statements included elsewhere in this quarterly report on Form 10-Q, which we have prepared in accordance with accounting principles generally accepted in the United States of America, or GAAP, for interim periods and with Regulation S-X promulgated under the Securities Exchange Act of 1934, as amended, or the Exchange Act. The preparation of these unaudited consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and related items, including, but not limited to, revenue recognition, accounts receivable and related reserves, valuation and impairment of investments and marketable securities, goodwill and other intangible assets, capitalized internal-use software costs, impairment and useful lives of long-lived assets, tax reserves, loss contingencies and stock-based compensation costs. We base our estimates and judgments on historical experience and on various other assumptions that we believe to be reasonable under the circumstances at the time they are made. Actual results may differ from our estimates. See the section entitled “Application of Critical Accounting Policies and Estimates” in our annual report on Form 10-K for the year ended December 31, 2010 for further discussion of our critical accounting policies and estimates.

Recent Accounting Pronouncements

In December 2010, the Financial Accounting Standards Board, or FASB, issued an accounting standard update for business combinations specifically related to the disclosure of supplementary pro forma information for business combinations. This guidance specifies that pro forma disclosures should be reported as if the business combination that occurred during the current year had occurred as of the beginning of the comparable prior annual reporting period, and the pro forma disclosures must include a description of material, nonrecurring pro forma adjustments. This standard was effective for business combinations with an acquisition date of January 1, 2011 or later. The adoption of the guidance did not have an impact on our financial position or results of operations.

In May 2011, the FASB issued amended guidance and disclosure requirements for fair value measurements. This guidance provides a consistent definition of fair value and ensures that the fair value measurement and disclosure requirements are similar between U.S. GAAP and international financial reporting standards. The guidance changes certain fair value measurement principles and enhances the disclosure requirements particularly for Level 3 fair value measurements. This standard will be effective for interim and annual periods beginning after December 15, 2011 and will be applied prospectively. The adoption of the guidance is not expected to have a material impact on our consolidated financial statements.

In June 2011, the FASB issued amended disclosure requirements for the presentation of comprehensive income. The amended guidance eliminates the option to present components of other comprehensive income, or OCI, as part of the statement of changes in equity. Under the amended guidance, all changes in OCI are to be presented either in a single continuous statement of comprehensive income or in two separate but consecutive financial statements. The changes will be effective January 1, 2012 and early adoption is permitted. There will be no impact on our consolidated financial results as the amendments relate only to changes in financial statement presentation.

In September 2011, the FASB issued amended guidance that will simplify how entities test goodwill for impairment. Under the amended guidance, after assessment of certain qualitative factors, if it is determined to be more likely than not that the fair value of a reporting unit is less than its carrying amount, entities must perform the quantitative analysis of the goodwill impairment test. Otherwise, the quantitative test(s) are optional. The guidance is effective January 1, 2012 with early adoption permitted. The adoption of the guidance is not expected to have a material impact on our financial position or results of operations.

Results of Operations

Revenues. Total revenues increased 11%, or $28.3 million, to $281.9 million for the three months ended September 30, 2011 as compared to $253.6 million for the three months ended September 30, 2010. For the nine months endedSeptember 30, 2011, revenues increased 13%, or $95.9 million, to $834.8 million as compared to $738.9 million

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for the nine months endedSeptember 30, 2010. The following table quantifies the contribution to growth in revenues during the periods presented from the different industry verticals in which we sell our services (in millions):

	For the Three Months Ended September 30, 2011 as compared to 2010		For the Nine Months Ended September 30, 2011 as compared to 2010
Media & Entertainment	$	5.6	$	31.9
Commerce	11.4		33.3
Enterprise	9.1		25.9
High Tech	1.5		0.4
Public Sector	0.7		4.4
Total net increase	$	28.3	$	95.9

A significant portion of the increase in revenues for the three and nine months ended September 30, 2011 as compared to the same periods in 2010 was driven by increased sales of value-added services to customers in our commerce and enterprise verticals. The revenues from our media and entertainment vertical increased due to traffic growth and were partially offset by reduced prices charged to our customers. Revenues from our high tech vertical remained relatively flat as increased demand for value-added solutions offset the decline in software download revenues. The increase in revenues from public sector customers was primarily attributable to new contracts with government agencies.

For the three- and nine-month periods ended September 30, 2011 and 2010, approximately 29% and 28%, respectively, of our revenues were derived from our operations located outside of the United States, including 18% derived from Europe during each of the three and nine month periods ended September 30, 2011 and 16% and 17% derived from Europe during each of the three and nine month periods ended September 30, 2010, respectively. No single country outside of the United States accounted for 10% or more of revenues during these periods. For the three- and nine-month periods ended September 30, 2011 and 2010, resellers accounted for 19% and 18% of revenues, respectively. For each of the three- and nine-month periods ended September 30, 2011 and 2010, no customer accounted for 10% or more of revenues.

Cost of Revenues. Cost of revenues was comprised of the following (in millions) for the periods presented:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2011		2010		2011		2010
Bandwidth and service-related fees	$	21.8	$	19.6	$	63.5	$	56.7
Co-location fees	33.7		25.2		96.3		68.2
Payroll and related costs of network operations personnel	3.9		4.0		11.3		10.4
Stock-based compensation, including amortization of prior capitalized amounts	2.2		2.5		7.3		7.6
Depreciation and impairment of network equipment	24.8		20.0		71.2		54.9
Amortization of internal-use software	6.9		6.5		22.4		19.3
Total cost of revenues	$	93.3	$	77.8	$	272.0	$	217.1

Cost of revenues increased 20%, or $15.5 million, to $93.3 million for the three months ended September 30, 2011 as compared to $77.8 million for the three months ended September 30, 2010. For the nine months endedSeptember 30, 2011, cost of revenues increased 25%, or $54.9 million, to $272.0 million as compared to $217.1 million for the nine months endedSeptember 30, 2010. This increase was primarily due to:

• increases in co-location costs as we deployed more servers worldwide;

• an increase in depreciation expense of network equipment and amortization of internal-use software as we continued to invest in our infrastructure; and

• an increase in amounts paid to network providers for bandwidth due to higher traffic levels, partially

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offset by reduced bandwidth costs per unit.

Cost of revenues during the three and nine months endedSeptember 30, 2011 also included credits received of approximately $2.7 million and $5.6 million, respectively, from settlements and renegotiated contracts entered into in connection with billing disputes related to bandwidth contracts. During the three and nine months endedSeptember 30, 2010, cost of revenues included similar credits of approximately $2.3 million and $4.5 million, respectively. Credits of this nature may occur in the future; however, the timing and amount of future credits, if any, are unpredictable.

We have long-term purchase commitments for bandwidth usage and co-location services with various network and Internet service providers. For the remainder of 2011 and for the years ending December 31, 2012, 2013, 2014 and 2015, we estimate that the minimum commitments related to bandwidth usage and co-location services under agreements currently in effect are approximately $37.0 million, $51.3 million, $8.6 million, $0.3 million and $0.1 million, respectively.

We believe that cost of revenues will increase during the fourth quarter of 2011 as compared to each of the first three quarters of 2011. We expect to deploy more servers and deliver more traffic on our network, which would result in higher expenses associated with the increased traffic and co-location fees; however, such costs are likely to be partially offset by lower bandwidth costs per unit. Additionally, for the remainder of 2011, we anticipate increases in depreciation expense related to our network equipment and amortization of internal-use software development costs, along with increased payroll and related costs, as we continue to make investments in our network with the expectation that our customer base will continue to expand.

Research and Development. Research and development expenses consist primarily of payroll and related costs and stock-based compensation expense for research and development personnel who design, develop, test and enhance our services and our network. Research and development costs are expensed as incurred, except certain internal-use software development costs eligible for capitalization. During the three and nine months endedSeptember 30, 2011, we capitalized software development costs of $8.8 million and $28.1 million, respectively, net of impairments. During the three and nine months endedSeptember 30, 2010, we capitalized software development costs of $8.4 million and $22.1 million, respectively, net of impairments. These development costs consisted of external consulting expenses and payroll and payroll-related costs for personnel involved in the development of internal-use software used to deliver our services and operate our network. Additionally, during the three and nine months endedSeptember 30, 2011, we capitalized $1.8 million and $5.2 million of stock-based compensation, respectively, as compared to $1.9 million and $5.4 million during the three and nine months endedSeptember 30, 2010, respectively. These capitalized internal-use software costs are amortized to cost of revenues over their estimated useful lives of two years.

Research and development expenses decreased 5%, or $0.7 million, to $13.5 million for the three months ended September 30, 2011 as compared to $14.2 million for the three months ended September 30, 2010. For the nine months endedSeptember 30, 2011, research and development expenses decreased 9%, or $3.8 million, to $37.1 million as compared to $41.0 million for the nine months endedSeptember 30, 2010. The decrease during the three and nine months endedSeptember 30, 2011 as compared to the same periods in 2010 was due to higher capitalized salaries and a decrease in stock-based compensation, partially offset by an increase in payroll and related costs as a result of headcount growth.

The following table quantifies the changes in the various components of our research and development expenses for the periods presented (in millions):

	For the Three Months Ended September 30, 2011 as compared to 2010			For the Nine Months Ended September 30, 2011 as compared to 2010
Payroll and related costs	$	1.2		$	6.6
Stock-based compensation	—			(2.6		)
Capitalized salaries and other expenses	(1.9		)	(7.8		)
Total net decrease	$	(0.7	)	$	(3.8	)

We believe that research and development expenses, in absolute dollar terms, will increase during the fourth quarter of 2011 as compared to the first nine months of 2011 because we expect to continue to hire additional development

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personnel in order to make improvements in our core technology, develop new services and make refinements to our existing service offerings.

Sales and Marketing. Sales and marketing expenses consist primarily of payroll and related costs, stock-based compensation expense and commissions for personnel engaged in marketing, sales and support functions, as well as advertising and promotional expenses.

Sales and marketing expenses decreased 2%, or $1.1 million, to $54.5 million for the three months ended September 30, 2011 as compared to $55.6 million for the three months ended September 30, 2010. For the nine months endedSeptember 30, 2011, sales and marketing expenses increased $0.2 million, to $160.7 million as compared to $160.5 million for the nine months endedSeptember 30, 2010. The decrease in sales and marketing expenses during the three months ended September 30, 2011 as compared to the same period in 2010 was primarily due to a decrease in stock-based compensation, partially offset by an increase in payroll and related costs. The increase in sales and marketing expenses during the nine months endedSeptember 30, 2011 as compared to the same period in 2010 was primarily due to an increase in payroll and related costs due to an increase in headcount, partially offset by a decrease in stock-based compensation, as well as a decrease in marketing and related costs and other expenses.

The following table quantifies the changes in the various components of our sales and marketing expenses for the periods presented (in millions):

	For the Three Months Ended September 30, 2011 as compared to 2010			For the Nine Months Ended September 30, 2011 as compared to 2010
Payroll and related costs	$	1.6		$	10.4
Stock-based compensation	(1.9		)	(7.5		)
Marketing and related costs	(0.4		)	(1.3		)
Other expenses	(0.4		)	(1.4		)
Total net (decrease) increase	$	(1.1	)	$	0.2

We believe that sales and marketing expenses will increase, in absolute dollar terms, during the fourth quarter of 2011 as compared to the first three quarters of 2011 due to an expected increase in commissions on higher forecasted sales of our services and an increase in payroll and related costs due to continued headcount growth in our sales and marketing organization.

General and Administrative. General and administrative expenses consist primarily of the following components:

• payroll, stock-based compensation expense and other related costs, including expenses for executive, finance, legal, business applications, network management, human resources and other administrative personnel;

• depreciation and amortization of property and equipment we use internally;

• fees for professional services;

• rent and other facility-related expenditures for leased properties;

• provision for doubtful accounts;

• insurance costs; and

• non-income related taxes.

General and administrative expenses increased 19%, or $8.1 million, to $50.8 million for the three months ended September 30, 2011 as compared to $42.7 million for the three months ended September 30, 2010. For the nine months endedSeptember 30, 2011, general and administrative expenses increased 12%, or $14.7 million, to $140.7 million as compared to $126.0 million for the nine months endedSeptember 30, 2010. The increase in general and administrative expenses for the three and nine months endedSeptember 30, 2011 as compared to the same periods in 2010 was primarily due to an increase in payroll and related costs as a result of headcount growth, facilities and related costs and legal fees due to ongoing litigation. These increases were partially offset by reductions in stock-based compensation.

The following table quantifies the changes in various components of our general and administrative expenses for the periods presented (in millions):

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	For the Three Months Ended September 30, 2011 as compared to 2010			For the Nine Months Ended September 30, 2011 as compared to 2010
Payroll and related costs	$	3.1		$	7.0
Stock-based compensation	(0.4		)	(3.9		)
Depreciation and amortization	0.1			0.2
Facilities-related costs	2.0			5.1
Provision for doubtful accounts	0.2			0.9
Legal fees	2.2			4.0
Non-income taxes	0.1			(0.6		)
Consulting and advisory services	0.7			(0.1		)
Other expenses	0.1			2.1
Total net increase	$	8.1		$	14.7

During the fourth quarter of 2011, we expect general and administrative expenses to increase, in absolute dollar terms, as compared to each of the first three quarters of 2011 due to anticipated higher payroll and related costs attributable to increased hiring as well as facilities and related costs.

Amortization of Other Intangible Assets. Amortization of other intangible assets consists of amortization of intangible assets acquired in business combinations and amortization of acquired license rights. Amortization of other intangible assets increased 1%, or $0.1 million, to $4.2 million for the three months ended September 30, 2011 as compared to $4.1 million for the three months ended September 30, 2010. For the nine months endedSeptember 30, 2011, amortization of other intangible assets increased 3%, or $0.4 million, to $12.8 million as compared to $12.4 million for the nine months endedSeptember 30, 2010. The increase in amortization of other intangible assets for the nine months endedSeptember 30, 2011 as compared to the same periods in 2010 was primarily due to the amortization of assets related to our acquisition of substantially all of the assets and liabilities of Velocitude LLC during the second quarter of 2010. Based on our intangible assets at September 30, 2011, we expect amortization of other intangible assets to be approximately $4.2 million for the remainder of 2011, and $15.9 million, $13.1 million, $7.6 million and $5.1 million for fiscal years 2012, 2013, 2014 and 2015, respectively.

Interest Income. Interest income includes interest earned on invested cash balances and marketable securities. Interest income decreased 4%, or $0.1 million, to $2.7 million for the three months ended September 30, 2011 as compared to $2.8 million for the three months ended September 30, 2010. For the nine months endedSeptember 30, 2011, interest income decreased 7%, or $0.6 million, to $8.7 million as compared to $9.3 million for the nine months endedSeptember 30, 2010. The decreases were due to lower interest rates earned on our investments during the comparable periods.

Interest Expense. Interest expense includes interest paid on our debt obligations as well as amortization of deferred financing costs. Interest expense was $0.2 million and $1.5 million for the three and nine months endedSeptember 30, 2010, respectively. As of September 30, 2010, we had $58.6 million in principal amount of outstanding senior convertible notes. During the nine months ended September 30, 2011, we had no outstanding indebtedness requiring the payment of interest.

Other Expense, net. Other expense, net primarily represents net foreign exchange gains and losses incurred, gains from legal settlements, and other non-operating (expense) income items. Other expense, net for the three months ended September 30, 2011 decreased to $0.2 million as compared to $1.4 million for the three months ended September 30, 2010. For each of the nine months endedSeptember 30, 2011 and September 30, 2010, other expense, net was $1.3 million. The decrease in other expense, net for the three months ended September 30, 2011 as compared to the same period in 2010 was primarily due to foreign exchange rate fluctuations. Other expense, net may fluctuate in the future based upon changes in foreign exchange rates, the outcome of legal proceedings or other events.

Provision for Income Taxes. For the nine months endedSeptember 30, 2011 and 2010, our effective income tax rate, including discrete items, was 35.7% and 37.0%, respectively. For the each of the three and nine months ended

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September 30, 2011 and September 30, 2010, the effective income tax rate was higher than the federal statutory tax rate mainly due to the effects of accounting for stock-based compensation in accordance with the authoritative guidance for share-based payments, and state income tax expense. The effective income tax rate is based upon the estimated income for the year, the estimated composition of the income in different jurisdictions and discrete adjustments, if any, in the applicable quarterly periods, including settlements of tax audits or assessments, the resolution or identification of tax position uncertainties, and acquisitions of other companies. Provision for income taxes increased 26%, or $5.3 million, to $25.9 million for the three months ended September 30, 2011 as compared to $20.6 million for the three months ended September 30, 2010. Provision for income taxes increased 12%, or $8.5 million, to $78.2 million for the nine months endedSeptember 30, 2011 as compared to $69.7 million for the nine months endedSeptember 30, 2010. The increase in the three and nine months endedSeptember 30, 2011 as compared to the same periods in 2010 was mainly due to the increase in operating income partially offset by the lower effective income tax rate in 2011 as compared to 2010.

While we expect our effective income tax rate for the fourth quarter of 2011 to remain relatively consistent with the rate applicable through the third quarter of 2011, this expectation does not take into consideration the effect of any potential discrete items to be recorded in the future. The effective tax rate could be materially different depending on the nature and timing of dispositions of incentive stock options and other employee equity awards. Further, our effective tax rate may fluctuate within a fiscal year and from quarter to quarter, due to items arising from discrete events, including settlements of tax audits and assessments, the resolution or identification of tax position uncertainties and acquisitions of other companies. In 2010, due to our continued utilization of available NOLs and tax credit carryforwards, our tax payments were significantly lower than our recorded income tax provision. We expect to utilize substantially all of our tax credit carryforwards in 2011. Once we have done so, the amount of cash tax payments we make will increase over those made in previous years.

In determining our net deferred tax assets and valuation allowances, annualized effective tax rates, and cash paid for income taxes, management is required to make judgments and estimates about domestic and foreign profitability, the timing and extent of the utilization of NOL carryforwards, applicable tax rates, transfer pricing methodologies and tax planning strategies. Judgments and estimates related to our projections and assumptions are inherently uncertain; therefore, actual results could differ materially from our projections.

We have recorded certain tax reserves to address potential exposures involving our income tax and sales and use tax positions. These potential tax liabilities result from the varying application of statutes, rules, regulations and interpretations by different taxing jurisdictions. Our estimate of the value of these tax reserves reflects assumptions based on past experiences and judgments about the interpretation of statutes, rules and regulations by taxing jurisdictions. It is possible that the ultimate tax liability or benefit from these matters may be materially greater or less than the amount that we have estimated.

Non-GAAP Measures

In addition to the traditional financial measurements reflected in our financial statements that have been prepared in accordance with GAAP, we also compile and monitor certain non-GAAP financial measures related to the performance of our business. We typically discuss the non-GAAP financial measures described below on our quarterly public earnings release calls. A “non-GAAP financial measure” is a numerical measure of a company’s historical or future financial performance that excludes amounts that are included in the most directly comparable measure calculated and presented in the GAAP statement of operations.

We believe that making available the non-GAAP financial measures described below helps investors to gain a meaningful understanding of our past performance and future prospects, especially when comparing such results to previous periods, forecasts or competitors’ financial statements. Our management uses these non-GAAP measures, in addition to GAAP financial measures, as the basis for measuring our core operating performance and comparing such performance to that of prior periods and to the performance of our competitors. These measures are also used by management in its financial and operational decision-making.

We consider normalized net income and normalized net income per diluted common share to be important indicators of our overall performance as they eliminate the effects of events that are either not part of our core operations or are non-cash. We define normalized net income as net income determined in accordance with GAAP excluding the following pre-tax items: amortization of other acquired intangible assets, stock-based compensation expense, stock-

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based compensation reflected as a component of amortization of capitalized internal-use software, restructuring charges and benefits, acquisition-related costs and benefits, certain gains and losses on investments, loss on early extinguishment of debt and restructuring charges.

These non-GAAP financial measures should be used in addition to, and in conjunction with, results presented in accordance with GAAP.

The following table reconciles GAAP net income to normalized net income and normalized net income per diluted share for the periods presented:

	Unaudited
	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2011		2010		2011			2010
	(in thousands, except per share data)
Net income	$	42,285	$	39,709	$	140,823		$	118,710
Amortization of other intangible assets	4,185		4,130		12,754			12,390
Stock-based compensation	15,141		18,589		42,465			57,973
Amortization of capitalized stock-based compensation	1,592		1,817		5,595			5,522
Loss on early extinguishment of debt	—		—		—			294
Acquisition-related costs (benefits)	—		—		(440		)	345
Restructuring charge	158		—		158			—
Total normalized net income	$	63,361	$	64,245	$	201,355		$	195,234
Normalized net income per diluted share	$	0.34	$	0.34	$	1.06		$	1.03
Shares used in per share calculations	185,704		191,271		189,089			190,254

We consider Adjusted EBITDA to be another important indicator of our operational strength and the performance of our business and a good measure of our historical operating trend. Adjusted EBITDA eliminates items that are either not part of our core operations or do not require a cash outlay. We define Adjusted EBITDA as net income determined in accordance with GAAP excluding interest, income taxes, depreciation and amortization of tangible and intangible assets, stock-based compensation expense, stock-based compensation reflected as a component of amortization of capitalized internal-use software, restructuring charges and benefits, acquisition-related costs and benefits, certain gains and losses on investments, foreign exchange gains and losses, loss on early extinguishment of debt and gains or losses on legal settlements.

The following table reconciles GAAP net income to Adjusted EBITDA for the periods presented:

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	Unaudited
	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2011			2010			2011			2010
	(in thousands)
Net income	$	42,285		$	39,709		$	140,823		$	118,710
Amortization of other intangible assets	4,185			4,130			12,754			12,390
Stock-based compensation	15,141			18,589			42,465			57,973
Amortization of capitalized stock-based compensation	1,592			1,817			5,595			5,522
Loss on early extinguishment of debt	—			—			—			294
Acquisition-related costs (benefits)	—			—			(440		)	345
Restructuring charge	158			—			158			—
Interest income, net	(3,002		)	(2,636		)	(9,058		)	(8,069		)
Provision for income taxes	25,862			20,603			78,218			69,677
Depreciation and amortization	35,984			30,532			105,879			86,201
Other loss, net	188			1,366			1,330			1,319
Adjusted EBITDA	$	122,393		$	114,110		$	377,724		$	344,362

Liquidity and Capital Resources

To date, we have financed our operations primarily through public and private sales of debt and equity securities, proceeds from exercises of stock awards and cash generated by operations.

As of September 30, 2011, our cash, cash equivalents and marketable securities, which consisted of corporate debt securities, U.S. Treasury and government agency securities, commercial paper, corporate debt securities, and student loan-backed ARS, totaled $1.2 billion. We place our cash investments in instruments that meet high quality credit standards, as specified in our investment policy. Our investment policy also limits the amount of our credit exposure to any one issue or issuer and seeks to manage these assets to achieve our goals of preserving principal, maintaining adequate liquidity at all times, and maximizing returns subject to our investment policy.

As of September 30, 2011 and December 31, 2010, we held approximately $135.4 million and $150.8 million in par value of ARS, respectively. The ARS are primarily AAA-rated bonds, most of which are guaranteed by the U.S. government as part of the Federal Family Education Loan Program through the U.S. Department of Education. None of the ARS in our portfolio is mortgage-based or collateralized debt obligations. In mid-February 2008, all of our ARS experienced failed auctions, which failures continued throughout the period ended September 30, 2011. As a result, we have been unable to liquidate most of our holdings of ARS. Based on our ability to access our cash and other short-term investments, our expected operating cash flows, and our other sources of cash, we do not anticipate the current lack of liquidity on these investments to have a material impact on our financial condition or results of operations in 2011 or the foreseeable future.

Net cash provided by operating activities was $316.6 million for the nine months ended September 30, 2011, compared to $292.1 million for the nine months ended September 30, 2010. The increase in cash provided by operating activities for the nine months ended September 30, 2011 as compared to the same period in 2010 was primarily due to a reduction in cash used in working capital and an increase in net income, partially offset by a reduction in the provision for deferred income taxes. We expect that cash provided by operating activities will increase as a result of an expected increase in cash collections related to anticipated higher revenues, partially offset by an anticipated increase in operating expenses that require cash outlays such as salaries and higher commissions.

Net cash provided by investing activities was $36.2 million for the nine months ended September 30, 2011, compared to $266.9 million of net cash used in investing activities for the nine months ended September 30, 2010. Cash provided by investing activities for the nine months ended September 30, 2011 reflects net sales and maturities of short- and long-term marketable securities of $172.7 million. Cash used in investing activities for the nine months endedSeptember 30, 2011 reflects purchases of property and equipment of $136.3 million, including $30.5 million

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related to the capitalization of internal-use software development costs. Cash used in investing activities for the nine months endedSeptember 30, 2010 reflects net purchases of short- and long-term marketable securities of $110.9 million, purchases of property and equipment of $143.3 million, including $23.8 million related to the capitalization of internal-use software development costs, cash paid for the acquisition of substantially all of the assets of Velocitude of $12.2 million, and an increase in other investments of $0.5 million. For fiscal year 2011, we expect total capital expenditures, a component of cash used in investing activities, to be approximately 16% of total revenues for the year, which reflects our plan to continue expansion of our network capacity to meet expected future traffic growth. We expect to fund such capital expenditures through cash generated from operations.

Net cash used in financing activities was $228.7 million for the nine months ended September 30, 2011, as compared to $10.8 million in net cash used in financing activities for the nine months ended September 30, 2010. Cash used in financing activities during the nine months ended September 30, 2011 consisted of $247.7 million related to a common stock repurchase program as described more fully below, as well as $5.7 million used for taxes paid related to net share settlements of equity awards. This was offset by cash provided by financing activities for the nine months ended September 30, 2011 of $11.5 million related to excess tax benefits resulting from the exercise of stock options and vesting of RSUs and proceeds of $13.3 million from issuances of common stock upon exercises of stock options under our stock option plans and employee stock purchase plan. Cash used in financing activities during the nine months ended September 30, 2010 consisted of $65.1 million related to our common stock repurchase program. This was offset by cash provided by financing activities during the nine months ended September 30, 2010 of $22.4 million related to excess tax benefits resulting from the exercise of stock options and vesting of RSUs and proceeds of $31.9 million from issuances of common stock upon exercises of stock options under our stock option plans and employee stock purchase plan.

Changes in cash, cash equivalents and marketable securities are dependent upon changes in, among other things, working capital items such as deferred revenues, accounts payable, accounts receivable and various accrued expenses, as well as changes in our capital and financial structure due to common stock repurchases, debt repurchases and issuances, stock option exercises, purchases and sales of equity investments and similar events.

The following table presents the net inflows and outflows of cash, cash equivalents and marketable securities for the periods presented (in millions):

	For the Nine Months Ended September 30,
	2011			2010
Cash, cash equivalents and marketable securities balance as of December 31, 2010 and 2009, respectively	$	1,243.4		$	1,061.5
Changes in cash, cash equivalents and marketable securities:
Receipts from customers	855.9			753.1
Payments to vendors	(459.8		)	(414.4		)
Payments for employee payroll	(223.7		)	(180.6		)
Debt interest and premium payments	—			(1.0		)
Stock option exercises and employee stock purchase plan issuances	13.3			31.9
Cash used in business acquisition	(0.6		)	(12.2		)
Employee taxes paid related to net share settlement of equity awards	(5.7		)	—
Common stock repurchases	(247.7		)	(65.1		)
Realized and unrealized (losses) gains on marketable investments and other investment-related assets, net	(3.5		)	6.2
Interest income	8.7			9.3
Other	10.7			1.5
Net increase	(52.4		)	128.7
Cash, cash equivalents and marketable securities balance as of September 30, 2011 and 2010, respectively	$	1,191.0		$	1,190.2

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On April 29, 2009, we announced that our Board of Directors had authorized a stock repurchase program permitting purchases of up to $100.0 million of our common stock from time to time on the open market or in privately-negotiated transactions. In April 2010, our Board of Directors authorized a new $150.0 million stock repurchase program. In April 2011, our Board of Directors authorized another, one-year $150.0 million stock repurchase program that began in May 2011. On August 8, 2011, our Board of Directors authorized an additional $250.0 million of stock repurchases over the twelve-month period that commenced in May 2011. The total authorized funding for stock repurchases in that twelve month period is now $400.0 million. Unused amounts from the prior year’s authorization were not carried over to the new program. During the nine months ended September 30, 2011, we repurchased 9.4 million shares of common stock for an aggregate of $248.4 million at an average price of $26.47 per share. During the nine months ended September 30, 2010, we repurchased 1.9 million shares of common stock for an aggregate of $65.1 million at an average price of $34.37 per share. The timing and amount of any future share repurchases will be determined by our management based on its evaluation of market conditions and other factors. Repurchases may also be made under a Rule 10b5-1 plan, which would permit us to repurchase shares when we might otherwise be precluded from doing so under insider trading laws. Subject to applicable securities laws requirements, we may choose to suspend or discontinue the repurchase program at any time. Any purchases made under the program will be reflected as an increase in cash used in financing activities. See Item 2 of Part II of this quarterly report on Form 10-Q for more detailed information about our repurchases.

We believe, based on our present business plan, that our current cash, cash equivalents and marketable securities and forecasted cash flows from operations will be sufficient to meet our cash needs for working capital and capital expenditures for at least the next 24 months. If the assumptions underlying our business plan regarding future revenue and expenses change, if we are unable to liquidate our marketable securities, or if unexpected opportunities or needs arise, we may seek to raise additional cash by selling equity or debt securities. We may not, however, be able to sell equity or debt securities on terms we consider reasonable, or at all. If additional funds are raised through the issuance of equity or debt securities, these securities could have rights, preferences and privileges senior to those accruing to holders of common stock, and the terms of any such debt could impose restrictions on our operations. The sale of additional equity or convertible debt securities could result in additional dilution to our existing stockholders. See “Risk Factors” in Item 1A of Part II of this quarterly report on Form 10-Q for a discussion of additional factors that could affect our liquidity.

Contractual Obligations, Contingent Liabilities and Commercial Commitments

The following table presents our contractual obligations and commercial commitments, as of September 30, 2011, for the next five years and thereafter (in millions):

	Payments Due by Period
Contractual Obligations as of September 30, 2011	Total		Less than 12 Months		12-36 Months		36-60 Months		More than 60 Months
Bandwidth and co-location agreements	$	97.3	$	81.3	$	15.9	$	0.1	$	—
Real estate operating leases	148.6		24.2		43.5		35.6		45.3
Open vendor purchase orders	50.6		50.6		—		—		—
Total	$	296.5	$	156.1	$	59.4	$	35.7	$	45.3

In accordance with authoritative guidance issued by the FASB, as of September 30, 2011, we had unrecognized tax benefits of $17.5 million, which included approximately $4.9 million of accrued interest and penalties. We do not expect to recognize any material tax benefits in 2011. We are not, however, able to provide a reasonably reliable estimate of the timing of future payments relating to these unrecognized tax benefits and related obligations.

Letters of Credit

As of September 30, 2011, we had $5.4 million in outstanding irrevocable letters of credit in favor of third-party beneficiaries, primarily related to facility leases. These irrevocable letters of credit are unsecured and are expected to remain in effect until December 2019.

Off-Balance Sheet Arrangements

We have entered into indemnification agreements with third parties, including vendors, customers, landlords, our officers and directors, shareholders of acquired companies, joint venture partners and third parties to which we license

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technology. Generally, these indemnification agreements require us to reimburse losses suffered by a third party due to various events, such as lawsuits arising from patent or copyright infringement or our negligence. These indemnification obligations are considered off-balance sheet arrangements in accordance with the authoritative guidance for guarantor’s accounting and disclosure requirements for guarantees, including indirect guarantees of indebtedness of others. See also Note 11 to our consolidated financial statements included in our annual report on Form 10-K for the year ended December 31, 2010 for further discussion of these indemnification agreements. The fair value of guarantees issued or modified during the three and nine months ended September 30, 2011 was determined to be immaterial.

As of September 30, 2011, we did not have any additional material off-balance sheet arrangements.

Litigation

We are party to litigation that we consider to be routine and incidental to our business and certain non-routine legal proceedings. Management does not expect the results of any of these routine actions to have a material impact on our financial condition or results of operations. See “Legal Proceedings” in Item 1 of Part II of this quarterly report on Form 10-Q and Note 15 to our unaudited consolidated financial statements elsewhere in this quarterly report on Form 10-Q for further discussion on litigation, including any developments related to material non-routine proceedings that have arisen since the filing of our annual report on Form 10-K.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Interest Rate Risk

Our portfolio of cash equivalents and short- and long-term investments is maintained in a variety of securities, including government agency obligations, high quality corporate bonds and money market funds. Investments are classified as available-for-sale securities and carried at their market value with cumulative unrealized gains or losses recorded as a component of accumulated other comprehensive income (loss) within stockholders' equity. A sharp rise in interest rates could have an adverse impact on the market value of certain securities in our portfolio. We do not currently hedge our interest rate exposure and do not enter into financial instruments for trading or speculative purposes.

At September 30, 2011, we held $135.4 million in par value of ARS that have experienced failed auctions, which has prevented us from liquidating those investments. Due to these liquidity issues, we used a discounted cash flow analysis to determine the estimated fair value of these ARS investments. Such analysis considered the timing of expected future successful auctions, the impact of extended periods of maximum interest rates, collateralization of underlying security investments and the creditworthiness of the issuer. The discounted cash flow analysis as of September 30, 2011 assumed a weighted average discount rate of 4.11% and expected term of five years. The discount rate was determined using a proxy based upon the current market rates for recent debt offerings. The expected term was based on management’s estimate of future liquidity. As a result, as of September 30, 2011, we have estimated an aggregate loss of $16.6 million, related to the impairment of ARS deemed to be temporary and included in accumulated other comprehensive income (loss) within stockholders’ equity. The impact for the three and nine months ended September 30, 2011 was a pre-tax loss of $4.3 million and $3.0 million, respectively, included in accumulated other comprehensive income (loss) within stockholders’ equity related to ARS having impairments deemed to be temporary. The aggregate loss in the fair value of ARS experienced in the nine months ended September 30, 2011 was primarily due to an increase in the weighted average discount rate used in the assumption of fair values from 3.21% used as of December 31, 2010 compared to 4.11% used as of September 30, 2011.

Our valuation of the ARS is sensitive to market conditions and management’s judgment and could change significantly based on the assumptions used. If, as of September 30, 2011, we assumed an expected term of three years or seven years and discount rate of 4.11%, the gross unrealized loss on the $135.4 million in par value of ARS classified as available-for-sale would have been $12.0 million and $21.0 million, respectively. If we had assumed an expected term of five years and discount rate of 3.11% or 5.11%, the gross unrealized loss on the $135.4 million in par value of ARS classified as available-for-sale would have been $10.6 million and $22.2 million, respectively.

Foreign Currency Risk

Growth in our international operations will incrementally increase our exposure to foreign currency fluctuations

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as well as other risks typical of international operations, including, but not limited to, differing economic conditions, changes in political climate, differing tax structures and other regulations and restrictions. Foreign exchange rate fluctuations may adversely impact our consolidated results of operations as exchange rate fluctuations on transactions denominated in currencies other than our functional currencies result in gains and losses that are reflected in our consolidated statements of operations. To the extent the U.S. dollar weakens against foreign currencies, the translation of these foreign currency-denominated transactions will result in increased net revenues and operating expenses. Conversely, our net revenues and operating expenses will decrease when the U.S. dollar strengthens against foreign currencies. We do not enter into financial instruments for trading or speculative purposes.

Transaction Exposure

The Company enters into short-term foreign currency forward contracts to offset the foreign exchange gains and losses generated by the re-measurement of certain assets and liabilities recorded in non-functional currencies. Changes in the fair value of these derivatives, as well as re-measurement gains and losses, are recognized in other expense, net. Foreign currency transaction gains and losses were determined to be immaterial during the nine months endedSeptember 30, 2011.

Translation Exposure

Foreign exchange rate fluctuations may adversely impact our consolidated financial position as the assets and liabilities of our foreign operations are translated into U.S. dollars in preparing our consolidated balance sheet. These gains or losses are recognized as an adjustment to stockholders' equity which is reflected in our balance sheet under accumulated other comprehensive income (loss).

Credit Risk

Concentrations of credit risk with respect to accounts receivable are limited to certain customers to which we make substantial sales. Our customer base consists of a large number of geographically dispersed customers diversified across numerous industries. To reduce risk, we routinely assess the financial strength of our customers. Based on such assessments, we believe that our accounts receivable credit risk exposure is limited. As of September 30, 2011 and December 31, 2010, one customer had an account receivable balance greater than 10% of our accounts receivable. We believe that, at September 30, 2011, concentration of credit risk related to accounts receivable was not significant.

Item 4. Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer (our principal executive officer and principal financial officer, respectively), evaluated the effectiveness of our disclosure controls and procedures as of September 30, 2011. The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure. Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives, and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Based on the evaluation of our disclosure controls and procedures as of September 30, 2011, our Chief Executive Officer and Chief Financial Officer concluded that, as of such date, our disclosure controls and procedures were effective at the reasonable assurance level.

No change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) occurred during the fiscal quarter ended September 30, 2011 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings

See Item 3 of Part I of our annual report on Form 10-K for the year ended December 31, 2010 for a discussion of legal proceedings and Item 1 of Part II of our quarterly report on Form 10-Q for the quarter ended June 30, 2011 for material developments in such legal proceedings during the quarter ended June 30, 2011. There were no material developments in such legal proceedings during the quarter ended September 30, 2011.

Item 1A. Risk Factors

The following are certain of the important factors, among others, that could cause our actual operating results to differ materially from those indicated or suggested by forward-looking statements made in this quarterly report on Form 10-Q or presented elsewhere by management from time to time. We have not made any material changes in the risk factors previously disclosed in our annual report on Form 10-K for the year ended December 31, 2010.

The markets in which we operate are highly competitive, and we may be unable to compete successfully against new entrants with innovative approaches and established companies with greater resources.

We compete in markets that are intensely competitive, highly fragmented and rapidly changing. We have experienced and expect to continue to experience increased competition. As we expand into new areas to address the evolving nature of the Internet, we may face competition from new and different companies. Many of these potential competitors, as well as some of our current ones, have longer operating histories, greater name recognition, broader customer relationships and substantially greater financial, technical and marketing resources than we do. Other competitors may attract customers by offering less-sophisticated versions of services than we provide at lower prices than those we charge. Given the relative ease with which some customers can potentially switch to another content delivery network provider, any differentiated offerings or lower pricing by competitors could lead to a rapid loss of customers. More nimble competitors may be able to respond more quickly than we can to new or emerging technologies and changes in customer requirements. In addition, current or potential competitors may bundle their offerings with other services, software or hardware in a manner that may discourage website owners from purchasing any service we offer.

Potential customers may decide to purchase or develop their own hardware, software and other technology solutions rather than rely on an external provider like Akamai. As a result, our competitors include hardware manufacturers, software companies and other entities that offer Internet-related solutions that are not service-based. It is an important component of our growth strategy to educate enterprises and government agencies about our services and to convince them to entrust their content and applications to an external service provider, and Akamai in particular. If we are unsuccessful in such efforts, our business could suffer.

Ultimately, increased competition of all types could result in price and revenue reductions, lower gross margins, loss of customers and loss of market share, which could materially and adversely affect our business, financial condition and results of operations.

If we are unable to continue to innovate and respond to emerging technological trends and customers’ changing needs, our operating results may suffer.

The market for our services is characterized by rapidly changing technology, evolving industry standards and new product and service introductions. For example, individuals are increasingly using mobile devices to access Internet content. Our ability to provide new and innovative solutions to address challenges posed by mobile users and other developments is important to our future growth; other companies are also looking to offer Internet-related solutions, such as cloud computing, to generate growth. These other companies may develop technological or business model innovations in the markets we seek to address that are, or are perceived to be, equivalent or superior to our services. In addition, our customers’ business models may change in ways that we do not anticipate and these changes could reduce or eliminate our customers’ needs for our services. Our operating results depend on our ability to adapt to market changes and develop and introduce new services into existing and emerging markets in a timely fashion. The process of developing new technologies is complex and uncertain; we must commit significant resources to developing new services or enhancements to our existing services before knowing whether our investments will result in services with sufficient demand to justify the investment or that the market will accept. Furthermore, we may not execute successfully

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our technology initiatives because of errors in planning or timing, technical hurdles that we fail to overcome in a timely fashion, misunderstandings about market demand or a lack of appropriate resources. If we are unable to continue to innovate, our operating results, particularly our rate of revenue growth, may suffer.

Prices we have been charging for some of our services have declined in recent years. This decline may continue in the future as a result of, among other things, existing and new competition in the markets we serve.

In recent quarters, we have lowered the prices we charge many of our customers for our content delivery services in order to remain competitive. This has been particularly true for the digital media services. Consequently, our historical revenue rates may not be indicative of future revenues based on comparable traffic volumes. If we are unable to sell our services at acceptable prices relative to our costs, we will not experience sufficient traffic volume over our network to offset unit price declines, or if we are unsuccessful with our strategy of selling additional services and features to new or existing content delivery customers, our revenues and gross margins will decrease, and our business and financial results will suffer.

Failure to increase our revenues and keep our expenses consistent with revenues could prevent us from maintaining profitability at recent levels or at all.

Our revenue growth rate may decline in future periods as a result of a number of factors including increasing competition, the inevitable decline in growth rates as our revenues increase to higher levels and macroeconomic factors affecting certain aspects of our business. We also believe our gross margins will decrease in the near term future because we have large fixed expenses and expect to continue to incur significant bandwidth, co-location and other expenses, including increased depreciation on network equipment purchased in recent years. As a result, we may not be able to continue to maintain our current level of profitability in the fourth quarter of this year, in 2012 or on a quarterly or annual basis thereafter.

There are numerous factors that could, alone or in combination with other factors, impede our ability to increase revenues and/or moderate expenses, including:

• market pressure to decrease our prices;

• significant increases in co-location and bandwidth costs or other operating expenses;

• failure to increase sales of our core services;

• increased competition;

• any failure of our current and planned services and software to operate as expected;

• loss of any significant customers or loss of existing customers at a rate greater than we increase our number of, and sales to, new customers or our sales to existing customers;

• unauthorized use of or access to content delivered over our network or network failures;

• the exhaustion of the supply of IPv4 addresses and the inability of Akamai or other Internet users to transition successfully or in a timely manner to IPv6;

• costs associated with hiring and retaining qualified employees;

• failure of a significant number of customers to pay our fees on a timely basis or at all or failure to continue to purchase our services in accordance with their contractual commitments; and

• inability to attract high-quality customers to purchase and implement our current and planned services.

General global market and economic conditions may have an adverse impact on our operating performance and results of operations.

Our business has been and could continue to be affected by general global economic and market conditions. Weakness in the economies of the United States, Europe, Japan and/or other regions has had and could continue to have a negative effect on our operating results, including decreases in revenues and operating cash flows. In particular, weakness in the online advertising market has affected and could continue to affect the success of our Internet advertising-related initiatives and could have a negative impact on our media and other customers. To the extent customers are unable to profitably monetize the content we deliver on their behalf, they may reduce or eliminate the traffic we deliver on their behalf. Such reductions in traffic would lead to a reduction in our revenues. Additionally, in a down-cycle economic environment, we may experience the negative effects of increased competitive pricing pressure, customer

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loss, slow down in commerce over the Internet and corresponding decrease in traffic delivered over our network and failures by customers to pay amounts owed to us on a timely basis or at all. Suppliers on which we rely for servers, bandwidth, co-location and other services could also be negatively impacted by economic conditions that, in turn, could have a negative impact on our operations or expenses. There can be no assurance, therefore, that worsening economic conditions or a prolonged or recurring recession will not have a significant adverse impact on our operating results.

Our failure to manage expected growth, diversification and changes to our business could harm us.

We have continued to grow, diversify and evolve our business both in the United States and internationally. It is unclear, however, whether such growth will continue. In the event of a slowing or decline in our rate of growth, we must also address the challenges of establishing an appropriate organizational size and structure while maintaining the quality of our services. If we are unable to do so, our profitability could be reduced.

As a result of the diversification of our business, personnel growth, acquisitions and international expansion in recent years, many of our employees are now based outside of our Cambridge, Massachusetts, headquarters. However, nearly all management decisions are made by a relatively small group of individuals based primarily at our headquarters. If we are unable to appropriately increase management depth and decentralize our decision making at rates commensurate with our actual or desired growth rates, we may not be able to achieve our financial or operational goals. In addition, if we are unable to effectively manage a large and geographically dispersed group of employees, our business may be adversely affected.

As our business evolves, we must also expand and adapt our operational infrastructure. Our business relies on our data systems, billing systems, and other operational and financial reporting and control systems. All of these systems have become increasingly complex in the recent past due to the diversification and complexity of our business, acquisitions of new businesses with different systems and increased regulation over controls and procedures. To effectively manage our technical support infrastructure, we will need to continue to upgrade and improve our data systems, billing systems and other operational and financial systems, procedures and controls. These upgrades and improvements will require a dedication of resources and in some cases are likely to be complex. If we are unable to adapt our systems and organization in a timely and cost-effective manner to accommodate changing circumstances, our business may be adversely affected.

Because our services are complex and are deployed in complex environments, they may have errors or defects that could seriously harm our business.

Our services are highly complex and are designed to be deployed in and across numerous large and complex networks that we do not control. From time to time, we have needed to correct errors and defects in our software. In the future, there may be additional errors and defects in our software that may adversely affect our services. We may not have in place adequate quality assurance procedures to ensure that we detect errors in our software and systems in a timely manner. If we are unable to efficiently and cost-effectively fix errors or other problems that may be identified, or if there are unidentified errors that allow persons to improperly access our services or alter, steal, misuse or otherwise interfere with our customers' content or applications, we could experience loss of revenues and market share, damage to our reputation, increased expenses and legal actions by our customers. As we emphasize the sale of solutions that involve security protections or require us to handle personally identifiable information or other important assets for our customers, the potential risks and associated liability we face could increase.

Any unplanned interruption in the functioning of our network or services or attacks on our internal information technology systems could lead to significant costs and disruptions that could reduce our revenues and harm our business, financial results and reputation.

Our business is dependent on providing our customers with fast, efficient and reliable distribution of applications and content over the Internet. For our core services, we currently provide a standard guarantee that our networks will deliver Internet content 24 hours a day, 7 days a week, 365 days a year. If we do not meet this standard, affected customers will be entitled to credits. Our network or services could be disrupted by numerous events, including natural disasters, unauthorized access to our servers, failure or refusal of our third-party network providers to provide the necessary capacity, errors caused by us, power losses and intentional disruptions of our services, such as disruptions caused by software viruses or attacks by unauthorized users. In addition, there have been and in the future may be attempts to gain unauthorized access to our information technology systems in order to steal information about our

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technology, financial data or other information or take other actions that would be damaging to us. Although we have taken steps to prevent such disruptions and security breaches, there can be no assurance that attacks by unauthorized users will not be attempted in the future, that our security measures will be effective, or that a successful attack would not be damaging. Any widespread interruption of the functioning of our network or services would reduce our revenues and could harm our business, financial results and reputation. Any successful breach of the security of our information systems could lead to the unauthorized release of valuable confidential information, including trade secrets, material nonpublic information about our financial condition and sensitive data that others could use to compete against us. Such consequences would likely harm our business and reputation.

We may have insufficient transmission and server capacity, which could result in interruptions in our services and loss of revenues.

Our operations are dependent in part upon transmission capacity provided by third-party telecommunications network providers. In addition, our distributed network must be sufficiently robust to handle all of our customers’ traffic particularly in the event of unexpected surges in HD video traffic. We believe that, absent extraordinary circumstances, we have access to adequate capacity to provide our services; however, there can be no assurance that we are adequately prepared for unexpected increases in bandwidth demands by our customers. The bandwidth we have contracted to purchase may become unavailable for a variety of reasons, including payment disputes or network providers going out of business. Any failure of these network providers to provide the capacity we require, due to financial or other reasons, may result in a reduction in, or interruption of, service to our customers and ultimately loss of those customers. If we are unable to obtain transmission capacity on terms commercially acceptable to us or at all, our business and financial results could suffer. In recent years, it has become increasingly expensive to collocate, or house, our servers at network facilities. We expect this trend to continue. These increased expenses have made, and will make, it more costly for us to expand our operations and more difficult for us to maintain or improve our gross margins. If we are unable to deploy on a timely and cost-effective basis enough servers to meet the needs of our customer base or effectively manage the functioning of those servers, we may lose customers. In addition, damage or destruction of, or other denial of access to, a facility where our servers are housed could result in a reduction in, or interruption of, service to our customers.

The potential exhaustion of the supply of unallocated IPv4 addresses and the inability of Akamai and other Internet users to successfully transition to IPv6 could harm our operations and the functioning of the Internet as a whole.

An Internet Protocol address, or IP address, is a numerical label that is assigned to any device connecting to the Internet. Today, the functioning of the Internet is dependent on the use of Internet Protocol version 4, or IPv4, which uses 32-bit addresses. We currently rely on the acquisition of IP addresses for the functioning and expansion of our network and expect such reliance to continue in the future. There are, however, only a finite number of IPv4 addresses. It is possible that the number of unallocated IPv4 addresses may be exhausted within one to two years. Internet Protocol version 6, or IPv6, uses 128-bit addresses and has been designed to succeed IPv4 and alleviate the expected exhaustion of unallocated addresses under that version. While IPv4 and IPv6 will co-exist for some period of time, eventually all Internet users and companies will need to transition to IPv6. While Akamai has been developing plans for the transition to IPv6 and ensuring that we are prepared to meet our customers’ needs for both IPv4- and IPv6-based technology, there is no guarantee that such plans will be effective. If we are unable to obtain the IPv4 addresses we need, on financial terms acceptable to us or at all, before we or other entities that rely on the Internet can transition to IPv6, our current and future operations could be materially harmed. If there is not a timely and successful transition to IPv6 by Internet users generally, the Internet could function less effectively which could damage numerous businesses, the economy generally and the prospects for future growth of the Internet as a medium for transacting business. This could, in turn, be harmful to our financial condition and results of operation.

As part of our business strategy, we have entered into and may enter into or seek to enter into business combinations, acquisitions, and other strategic relationships that may be difficult to integrate, disrupt our business, dilute stockholder value and divert management attention.

We have completed numerous acquisitions in recent years. If attractive acquisition opportunities arise in the future, we may seek to enter into additional business combinations or purchases. Acquisitions and combinations are accompanied by a number of risks, including the difficulty of integrating the operations and personnel of the acquired companies, the potential disruption of our ongoing business, the potential distraction of management, expenses related to the acquisition and potential unknown liabilities associated with acquired businesses. Any inability to integrate completed acquisitions or combinations in an efficient and timely manner could have an adverse impact on our results

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of operations. In addition, we may not be able to recognize any expected synergies or benefits in connection with a future acquisition or combination. If we are not successful in completing acquisitions or combinations that we may pursue in the future, we may incur substantial expenses and devote significant management time and resources without a successful result. In addition, future acquisitions could require use of substantial portions of our available cash or result in dilutive issuances of securities. We may also enter into other types of strategic relationships that involve technology sharing or close cooperation with other companies. Such relationships can be distracting to management and require the investment of significant amounts of money without a guaranteed return on investment or realization of significant, or any, benefits.

Our stock price has been volatile.

The market price of our common stock has been volatile. Trading prices may continue to fluctuate in response to a number of events and factors, including the following:

• quarterly variations in operating results and announcements of innovations;

• introduction of new products, services and strategic developments by us or our competitors;

• business combinations and investments by us or our competitors;

• variations in our revenue, expenses or profitability;

• market speculation about whether we are a takeover target;

• changes in financial estimates and recommendations by securities analysts;

• failure to meet the expectations of public market analysts;

• disruptions to our services or unauthorized access to our information technology systems;

• unfavorable media coverage;

• macro-economic factors;

• repurchases of shares of our common stock;

• our customers’ inability to access equity and credit markets;

• performance by other companies in our industry; and

• geopolitical conditions such as acts of terrorism or military conflicts.

Any of these events may cause the price of our common stock to fall. In addition, the stock market in general, and the market prices for technology companies in particular, have experienced significant volatility that often has been unrelated to the operating performance of such companies. These broad market and industry fluctuations may adversely affect the market price of our common stock, regardless of our operating performance.

If the accounting estimates we make, and the assumptions on which we rely, in preparing our financial statements prove inaccurate, our actual results may be adversely affected.

Our financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America. The preparation of these financial statements requires us to make estimates and judgments about, among other things, taxes, revenue recognition, stock-based compensation costs, capitalization of internal-use software, investments, contingent obligations, allowance for doubtful accounts, intangible assets and restructuring charges. These estimates and judgments affect the reported amounts of our assets, liabilities, revenues and expenses, the amounts of charges accrued by us, and related disclosure of contingent assets and liabilities. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances at the time they are made. If our estimates or the assumptions underlying them are not correct, actual results may differ materially from our estimates and we may need to, among other things, accrue additional charges that could adversely affect our results of operations, which in turn could adversely affect our stock price.

Future changes in financial accounting standards may adversely affect our reported results of operations.

A change in accounting standards can have a significant effect on our reported results. New accounting pronouncements and interpretations of existing accounting pronouncements have occurred and may occur in the future. These new accounting pronouncements may adversely affect our reported financial results.

Fluctuations in foreign currency exchange rates affect our operating results in U.S. dollar terms.

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A portion of our revenues arises from international operations. Revenues generated and expenses incurred by our international subsidiaries are often denominated in the currencies of the local countries. As a result, our consolidated U.S. dollar financial statements are subject to fluctuations due to changes in exchange rates as the financial results of our international subsidiaries are translated from local currencies into U.S. dollars. In addition, our financial results are subject to changes in exchange rates that impact the settlement of transactions in non-functional currencies.

A substantial portion of our marketable securities are invested in auction rate securities. Continued failures in the auctions for these securities may affect our liquidity.

We held $135.4 million in par value of auction rate securities, or ARS, as of September 30, 2011, which represented approximately 16% of our total short- and long-term marketable securities of $0.8 billion as of that date. ARS are securities that are structured to allow for short-term interest rate resets but with contractual maturities that can be well in excess of ten years. At the end of each reset period, which typically occurs every seven to 35 days, investors can sell or continue to hold the securities at par. Beginning in February 2008, the majority of ARS in the marketplace, including the ARS that we hold in our portfolio, failed auction due to sell orders exceeding buy orders. Such failures resulted in the interest rate on these ARS resetting to predetermined rates in accordance with the underlying loan agreement, and such predetermined rates might be lower than the current market rate of interest. In the event we need to liquidate our investments in these types of securities including for purposes of funding our operations, we will not be able to do so until a future auction on these investments occurs in which demand equals or exceeds the supply of such securities being offered, the issuer redeems the outstanding securities, a buyer is found outside the auction process, the securities mature or there is a default requiring immediate payment from the issuer. These alternative liquidation measures may require that we sell our ARS at a substantial discount to par value. In the future, should the ARS we hold be subject to prolonged auction failures and we determine that the decline in value of ARS is other-than-temporary, we would recognize a loss in our consolidated statement of operations, which could be material. In addition, any future failed auctions may adversely impact the liquidity of our investments and, depending upon other future uses of cash, our ability to fund our operations. Furthermore, if one or more of the issuers of the ARS held in our portfolio are unable to successfully close future auctions and their credit ratings deteriorate, we may be required to adjust the carrying value of these investments through additional impairment charges, which could be material. We may also incur significant legal and related expenses in connection with efforts to require one or more of the investment advisors that sold us ARS to provide liquidity for these securities. There can be no assurance that any such efforts would be successful.

If we are unable to retain our key employees and hire qualified sales and technical personnel, our ability to compete could be harmed.

Our future success depends upon the continued services of our executive officers and other key technology, sales, marketing and support personnel who have critical industry experience and relationships. There is significant competition for talented individuals in the regions in which our primary offices are located. This affects both our ability to retain key employees and hire new ones. None of our officers or key employees is bound by an employment agreement for any specific term. We compensate our officers and employees in part through equity incentives, including stock options. Some of these stock options held by our officers and employees have exercise prices in excess of the current market price of our common stock, which has diminished the retentive value of such options. The loss of the services of any of our key employees could hinder or delay the implementation of our business model and the development and introduction of, and negatively impact our ability to sell, our services.

We may need to defend against patent or copyright infringement claims, which would cause us to incur substantial costs.

Other companies or individuals, including our competitors, may hold or obtain patents or other proprietary rights that would prevent, limit or interfere with our ability to make, use or sell our services or develop new services, which could make it more difficult for us to increase or maintain revenues and improve or maintain profitability. Companies holding Internet-related patents or other intellectual property rights are increasingly bringing suits alleging infringement of such rights against both technology providers and customers that use such technology.

We have agreed to indemnify our customers if our services infringe specified intellectual property rights; therefore, we could become involved in litigation brought against customers if our services and technology are implicated. Any litigation or claims, whether or not valid, brought against us or pursuant to which we indemnify our customers could result in substantial costs and diversion of resources and require us to do one or more of the following:

40

• cease selling, incorporating or using products or services that incorporate the challenged intellectual property;

• pay substantial damages and incur significant litigation expenses;

• obtain a license from the holder of the infringed intellectual property right, which license may not be available on reasonable terms or at all; or

• redesign products or services.

If we are forced to take any of these actions, our business may be seriously harmed. In the event of a successful claim of infringement against us and our failure or inability to obtain a license to the infringed technology, our business and operating results could be materially adversely affected.

Our business will be adversely affected if we are unable to protect our intellectual property rights from unauthorized use or infringement by third parties.

We rely on a combination of patent, copyright, trademark and trade secret laws and restrictions on disclosure to protect our intellectual property rights. These legal protections afford only limited protection. We have previously brought lawsuits against entities that we believe are infringing our intellectual property rights but have not always prevailed. Such lawsuits can be expensive and require a significant amount of attention of our management and technical personnel, and the outcomes are unpredictable. Developments and changes in patent law, such as changes in interpretations of the joint infringement standard, could also restrict how we enforce certain patents we hold. Monitoring unauthorized use of our services is difficult, and we cannot be certain that the steps we have taken will prevent unauthorized use of our technology, particularly in foreign countries where the laws may not protect our proprietary rights as fully as in the United States. Although we have licensed from other parties proprietary technology covered by patents, we cannot be certain that any such patents will not be challenged, invalidated or circumvented. Such licenses may also be non-exclusive, meaning our competition may also be able to access such technology. Furthermore, we cannot be certain that any pending or future patent applications will be granted, that any future patent will not be challenged, invalidated or circumvented, or that rights granted under any patent that may be issued will provide competitive advantages to us. If we are unable to protect our proprietary rights from unauthorized use, the value of our intellectual property assets may be reduced.

If our license agreement with MIT terminates, our business could be adversely affected.

We have licensed from MIT technology that is covered by various patents, patent applications and copyrights relating to Internet content delivery technology. Some of our core technology is based in part on the technology covered by these patents, patent applications and copyrights. Our license is effective for the life of the patents and patent applications; however, under limited circumstances, such as a cessation of our operations due to our insolvency or our material breach of the terms of the license agreement, MIT has the right to terminate our license. A termination of our license agreement with MIT could have a material adverse effect on our business.

If our ability to deliver media files in popular proprietary content formats were to become restricted or cost-prohibitive, demand for our content delivery services could decline, we could lose customers and our financial results could suffer.

Our business depends on our ability to deliver media content in all major formats. If our legal right or technical ability to store and deliver content in one or more popular proprietary content formats, such as Adobe^® Flash^® or Windows^® Media^®, was limited, our ability to serve our customers in these formats would be impaired and the demand for our content delivery services would decline by customers using these formats. Owners of propriety content formats may be able to block, restrict or impose fees or other costs on our use of such formats, which could lead to additional expenses for us and for our customers, or which could prevent our delivery of this type of content altogether. Such interference could result in a loss of existing customers, increased costs and impairment of our ability to attract new customers, which would harm our revenue, operating results and growth.

We face risks associated with international operations that could harm our business.

We have operations in numerous foreign countries and may continue to expand our sales and support organizations internationally. Such expansion could require us to make significant expenditures. We are increasingly subject to a number of risks associated with international business activities that may increase our costs, lengthen our sales cycle and require significant management attention. These risks include:

41

• increased expenses associated with marketing services in foreign countries;

• currency exchange rate fluctuations and limitations on the repatriation and investment of funds;

• unexpected changes in regulatory requirements resulting in unanticipated costs and delays;

• applications or interpretations of laws or regulations that would subject us to regulatory supervision, additional liability and associated costs, or require us to exit a country, which could have a negative impact on the quality of our services or our results of operations;

• uncertainty regarding liability for content or services;

• uncertainty about the attractiveness of our offerings to customers based in regions outside of the United States;

• adjusting to different employee/employer relationships and different regulations governing such relationships;

• difficulty in staffing, developing and managing foreign operations as a result of distance, language and cultural differences;

• increased demands on our internal control processes and other resources;

• longer accounts receivable payment cycles and difficulties in collecting accounts receivable;

• longer sales cycles that may cause operations in foreign countries to be unprofitable for an extended and indefinite period of time; and

• potentially adverse tax consequences.

If we are required to seek additional funding, such funding may not be available on acceptable terms or at all.

If we seek to acquire significant businesses or technologies or require more cash to fund our future plans, we may need to obtain funding from outside sources. From time to time, the economic environment can make it difficult for companies to obtain financing, particularly raising debt financing or implementing credit facilities. Therefore, we may not be able to raise additional capital when needed, which could limit future actions we may want to take. Even if we were to find outside funding sources, we might be required to issue securities with greater rights than the securities we have outstanding today or issue debt that places restrictions on our future activities. We might also be required to take other actions that could lessen the value of our common stock, including borrowing money on terms that are not favorable to us.

Changes in regulations or user concerns regarding privacy and protection of user data could adversely affect our business.

Federal, state, foreign and international laws and regulations may govern the collection, use, retention, sharing and security of data that we receive from our customers, visitors to their websites and others. In addition, we have and post on our website our own privacy policy concerning the collection, use and disclosure of user data. Any failure, or perceived failure, by us to comply with our posted privacy policies or with any privacy-related laws, government regulations or directives, or industry self-regulatory principles could result in damage to our reputation or proceedings or actions against us by governmental entities or others, which could potentially have an adverse effect on our business.

A large number of legislative proposals pending before the U.S. Congress, various state legislative bodies and foreign governments concern data privacy and retention issues related to our business, particularly the advertising-related services we have begun to offer. It is not possible to predict whether, when, or the extent to which such legislation may be adopted. In addition, the interpretation and application of user data protection laws are currently unsettled. These laws may be interpreted and applied inconsistently from jurisdiction to jurisdiction and inconsistently with our current data protection policies and practices. Complying with these varying international requirements could cause us to incur substantial costs or require us to change our business practices in a manner adverse to our business.

Internet-related and other laws could adversely affect our business.

Laws and regulations that apply to data flows, communications and commerce over the Internet are becoming more prevalent. In particular, the growth and development of the market for online business has prompted calls for more stringent tax, consumer protection, security, anti-discrimination and privacy laws, both in the United States and abroad, that may impose additional burdens on companies conducting business online or providing Internet-related services such as ours. The adoption of any of these measures could negatively affect both our business directly as well as the businesses of our customers, which could reduce their demand for our services. In addition, domestic and

42

international government attempts to regulate the operation of the Internet could negatively impact our business.

Local tax laws that might apply to our servers, which are located in many different jurisdictions, could require us to pay additional taxes in those jurisdictions, which could adversely affect our continued profitability. We have recorded certain tax reserves to address potential exposures involving our sales and use and franchise tax positions. These potential tax liabilities result from the varying application of statutes, rules, regulations and interpretations by different jurisdictions. Our reserves, however, may not be adequate to cover our total actual liability. As a government contractor, we are also subject to numerous laws and regulations. If we fail to comply with applicable requirements, we could face penalties, contract terminations and damage to our reputation. We also may be required to devote substantial resources to the development and improvement of procedures to ensure compliance with applicable regulations.

Global climate change could adversely impact our business.

Recent scientific studies and other news reports suggest the possibility of global climate change. In response, governments may adopt new regulations affecting the use of fossil fuels or requiring the use of alternative fuel sources. In addition, our customers may require us to take steps to demonstrate that we are taking ecologically responsible measures in operating our business. Our deployed network of tens of thousands of servers consumes significant energy resources, including those generated by the burning of fossil fuels. It is possible that future regulatory or legislative initiatives or customer demands could affect the costs of operating our network of servers and our other operations. Such costs and any expenses we incur to make our network more efficient could make us less profitable in future periods. Failure to comply with applicable laws and regulations or other requirements imposed on us could lead to fines, lost revenues and damage to our reputation.

Provisions of our charter documents, our stockholder rights plan and Delaware law may have anti-takeover effects that could prevent a change in control even if the change in control would be beneficial to our stockholders.

Provisions of our amended and restated certificate of incorporation, amended and restated by-laws and Delaware law could make it more difficult for a third party to acquire us, even if doing so would be beneficial to our stockholders. These provisions include:

• A classified board structure so that only approximately one-third of our board of directors is up for re-election in any one year;

• Our board of directors has the right to elect directors to fill a vacancy created by the expansion of the board of directors or the resignation, death or removal of a director, which prevents stockholders from being able to fill vacancies on our board of directors;

• Stockholders must provide advance notice to nominate individuals for election to the board of directors or to propose matters that can be acted upon at a stockholders’ meeting; such provisions may discourage or deter a potential acquirer from conducting a solicitation of proxies to elect the acquirer’s own slate of directors or otherwise attempting to obtain control of our company; and

• Our board of directors may issue, without stockholder approval, shares of undesignated preferred stock; the ability to issue undesignated preferred stock makes it possible for our board of directors to issue preferred stock with voting or other rights or preferences that could impede the success of any attempt to acquire us.

In addition, our Board of Directors has adopted a stockholder rights plan the provisions of which could make it more difficult for a potential acquirer of Akamai to consummate an acquisition transaction without the approval of our Board of Directors. Further, as a Delaware corporation, we are also subject to certain Delaware anti-takeover provisions. Under Delaware law, a corporation may not engage in a business combination with any holder of 15% or more of its capital stock unless the holder has held the stock for three years or, among other things, the board of directors has approved the transaction. Our board of directors could rely on Delaware law to prevent or delay an acquisition of us.

A class action lawsuit has been filed against us and an adverse resolution of such action could have a material adverse effect on our financial condition and results of operations in the period in which the lawsuit is resolved.

We are named as a defendant in a purported class action lawsuit filed in 2001 alleging that the underwriters of our initial public offering received undisclosed compensation in connection with our initial public offering of common stock in violation of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended.

43

We are also a nominal defendant in a related lawsuit alleging violations of Section 16 of the Securities Exchange of 1934, as amended, by such underwriters and our officers and directors. See Part I, Item 3 of our annual report on Form 10-K for the year ended December 31, 2010 for more information. Any conclusion of these matters in a manner adverse to us could have a material adverse affect on our financial position and results of operations.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Issuer Purchases of Equity Securities

Period(1)	(a) Total Number of Shares Purchased(2)	(b) Average Price Paid per Share(3)		(c) Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs(4)	(d) Maximum Number (or Approximate Dollar Value) of Shares that May Yet be Purchased Under Plans or Programs (5)
July 1, 2011 – July 31, 2011	354,032	$	29.64	354,032	$	100,643,552
August 1, 2011 – August 31, 2011	4,470,126	$	22.93	4,470,126	$	248,131,013
September 1, 2011 – September 30, 2011	1,995,752	$	21.11	1,995,752	$	206,010,307
Total	6,819,910			6,819,910

(1) Information is based on settlement dates of repurchase transactions.

(2) Consists of shares of our common stock, par value $0.01 per share. All repurchases were made pursuant to a previously-announced program (see note 4 below). All repurchases were made in open market transactions under the terms of a Rule 10b5-1 plan adopted by us.

(3) Includes commissions paid.

(4) In April 2011, we announced that our Board of Directors had approved a one-year stock repurchase program for up to $150.0 million of our common stock that began in May 2011 under the same terms as earlier programs. On August 8, 2011, the Company's Board of Directors authorized an additional $250.0 million of stock repurchases over the twelve month period that commenced in May 2011. The total authorized funding for stock repurchases in that twelve month period is now $400.0 million. See Note 8 to our unaudited consolidated financial statements included elsewhere in this quarterly report on Form 10-Q.

(5) Reflects $400.0 million from the 2011 program minus the total aggregate amount purchased during such month and all prior months during which the 2011 repurchase program was in effect and aggregate commissions paid in connection therewith.

Item 6. Exhibits

The exhibits filed as part of this quarterly report on Form 10-Q are listed in the exhibit index immediately preceding the exhibits and are incorporated herein.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	Akamai Technologies, Inc.
November 9, 2011	By:	/s/    J. DONALD SHERMAN
		J. Donald Sherman
		Chief Financial Officer (Duly Authorized Officer, Principal Financial Officer)

45

EXHIBIT INDEX

Exhibit 31.1	Certification of Chief Executive Officer pursuant to Rule 13a-14(a)/ Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended
Exhibit 31.2	Certification of Chief Financial Officer pursuant to Rule 13a-14(a)/ Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended
Exhibit 32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
Exhibit 32.2	Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document.**
101.SCH	XBRL Taxonomy Extension Schema Document.**
101.CAL	XBRL Taxonomy Calculation Linkbase Document.**
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document.**
101.LAB	XBRL Taxonomy Label Linkbase Document.**
101.PRE	XBRL Taxonomy Presentation Linkbase Document.**

** submitted electronically herewith

Attached as Exhibit 101 to this report are the following formatted in XBRL (Extensible Business Reporting Language): (i) Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2011 and September 30, 2010, (ii) Condensed Consolidated Balance Sheets at September 30, 2011 and December 31, 2010, (iii) Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2011 and September 30, 2010 and (iv) Notes to Condensed Consolidated Financial Statements.

46

EX-31.1

Exhibit 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, Paul Sagan, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Akamai Technologies, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:	November 9, 2011	/S/    PAUL SAGAN
		Paul Sagan, Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

I, J. Donald Sherman, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Akamai Technologies, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:	November 9, 2011	/s/ J. Donald Sherman
		J. Donald Sherman, Chief Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report on Form 10-Q of Akamai Technologies, Inc. (the “Company”) for the period ended September 30, 2011 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, Paul Sagan, Chief Executive Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, that to his knowledge:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	November 9, 2011	/S/    PAUL SAGAN
		Paul Sagan, Chief Executive Officer

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report on Form 10-Q of Akamai Technologies, Inc. (the “Company”) for the period ended September 30, 2011 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, J. Donald Sherman, Chief Financial Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, that to his knowledge:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	November 9, 2011	/s/ J. Donald Sherman
		J. Donald Sherman, Chief Financial Officer

XML

Concentration of Credit Risk (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2011 years countries customers	Dec. 31, 2010 years customers
Estimated aggregate loss related to impairment of auction rate securities included in accumulated other comprehensive income loss	$ 16,600,000	$ 13,500,000
Number of customers related to greater than 10% of accounts receivable	1	1
Auction Rate Securities [Member]
Aggregate Fair value	$ 118,775,000	$ 137,256,000

XML

Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data	Sep. 30, 2011	Dec. 31, 2010
Statement of Financial Position [Abstract]
Marketable securities, restricted securities	$ 51	$ 272
Accounts receivable, net of reserves	5,676	5,232
Marketable securities, restricted securities	$ 45	$ 45
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares designated as Series A Junior Participating Preferred Stock	700,000	700,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	700,000,000	700,000,000
Common stock, shares issued	194,682,252	192,383,121
Common stock, shares outstanding	179,519,564	186,603,380
Treasury stock, shares	15,162,688	5,779,741

XML

Consolidated Statements of Operations (USD $) Share data in Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenues	$ 281,856,000	$ 253,551,000	$ 834,798,000	$ 738,898,000
Costs and operating expenses:
Cost of revenues	93,284,000	77,812,000	271,999,000	217,126,000
Research and development	13,542,000	14,235,000	37,142,000	40,991,000
Sales and marketing	54,520,000	55,603,000	160,722,000	160,474,000
General and administrative	50,834,000	42,729,000	140,710,000	125,986,000
Amortization of other intangible assets	4,200,000	4,100,000	12,800,000	12,400,000
Restructuring charge	158,000	0	158,000	0
Total costs and operating expenses	216,523,000	194,509,000	623,485,000	556,967,000
Income from operations	65,333,000	59,042,000	211,313,000	181,931,000
Interest income	2,703,000	2,809,000	8,675,000	9,321,000
Interest expense	0	(222,000)	0	(1,549,000)
Other expense, net	(188,000)	(1,366,000)	(1,330,000)	(1,319,000)
Gain on investments, net	299,000	49,000	383,000	297,000
Loss on early extinguishment of debt	0	0	0	(294,000)
Income before provision for income taxes	68,147,000	60,312,000	219,041,000	188,387,000
Provision for income taxes	25,862,000	20,603,000	78,218,000	69,677,000
Net income	$ 42,285,000	$ 39,709,000	$ 140,823,000	$ 118,710,000
Net income per weighted average share:
Basic	$ 0.23	$ 0.22	$ 0.76	$ 0.68
Diluted	$ 0.23	$ 0.21	$ 0.74	$ 0.63
Shares used in per share calculations:
Basic	183,085	181,457	185,515	175,292
Diluted	185,704	191,271	189,089	190,254

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Commitments, Contingencies and Guarantees (Narrative) (Details) (USD $) In Millions	Sep. 30, 2011
Bandwidth and purchase order commitments
Aggregate purchase commitments for current year	$ 50.6
Bandwidth Usage And Co Location Services [Member]
Bandwidth and purchase order commitments
2011	37.0
2012	51.3
2013	8.6
2014	0.3
2015	$ 0.1

XML

Marketable Securities and Investments (Tables)

9 Months Ended

Sep. 30, 2011

Marketable Securities [Abstract]

Marketable Securities

The following is a summary of marketable securities held at September 30, 2011 and December 31, 2010 (in thousands):

			Gross Unrealized							Classification on Balance Sheet
As of September 30, 2011	Cost		Gains		Losses			Aggregate Fair Value		Short-term Marketable Securities		Long-term Marketable Securities
Available-for-sale securities:
Certificates of deposit	$	96	$	—	$	—		$	96	$	51	$	45
Commercial paper	59,989		—		(23		)	59,966		59,966		—
U.S. corporate debt securities	539,365		867		(995		)	539,237		261,922		277,315
U.S. government agency obligations	117,227		102		(7		)	117,322		10,028		107,294
Auction rate securities	135,350		—		(16,575		)	118,775		—		118,775
	$	852,027	$	969	$	(17,600	)	$	835,396	$	331,967	$	503,429
			Gross Unrealized							Classification on Balance Sheet
As of December 31, 2010	Cost		Gains		Losses			Aggregate Fair Value		Short-term Marketable Securities		Long-term Marketable Securities
Available-for-sale securities:
Certificates of deposit	$	96	$	—	$	—		$	96	$	51	$	45
Commercial paper	59,912		34		(2		)	59,944		59,944		—
U.S. corporate debt securities	651,855		1,416		(736		)	652,535		301,625		350,910
U.S. government agency obligations	161,722		102		(119		)	161,705		13,385		148,320
Auction rate securities	150,800		—		(13,544		)	137,256		—		137,256
	$	1,024,385	$	1,552	$	(14,401	)	$	1,011,536	$	375,005	$	636,531

Schedule of Fair Value Measurement

The following table details the fair value measurements within the fair value hierarchy of the Company’s financial assets, including investments and cash equivalents, at September 30, 2011 and December 31, 2010 (in thousands):

			Fair Value Measurements at Reporting
	Total Fair Value at		Date Using
	September 30, 2011		Level 1		Level 2		Level 3
Money market funds	$	21,057	$	21,057	$	—	$	—
Certificates of deposit	96		96		—		—
Commercial paper	195,707		—		195,707		—
U.S. corporate debt securities	570,062		—		570,062		—
U.S. government agency obligations	117,322		—		117,322		—
Auction rate securities	118,775		—		—		118,775
	$	1,023,019	$	21,153	$	883,091	$	118,775
			Fair Value Measurements at Reporting
	Total Fair Value at		Date Using
	December 31, 2010		Level 1		Level 2		Level 3
Money market funds	$	55,648	$	55,648	$	—	$	—
Certificates of deposit	96		96		—		—
Commercial paper	59,944		—		59,944		—
U.S. corporate debt securities	652,535		—		652,535		—
U.S. government agency obligations	161,705		—		161,705		—
Auction rate securities	137,256		—		—		137,256
	$	1,067,184	$	55,744	$	874,184	$	137,256

Schedule of Activity of Major Classes of Assets Measured at Fair Value Using Level 3 Inputs

The following tables reflect the activity for the Company’s major classes of financial assets measured at fair value using Level 3 inputs, consisting solely of ARS, for the nine month periods ended September 30, 2011 and 2010 (in thousands):

	Auction Rate Securities
Balance as of December 31, 2010	$	137,256
Redemptions of securities	(15,450		)
Unrealized loss included in accumulated other comprehensive income (loss), net	(3,031		)
Balance as of September 30, 2011	$	118,775

	Auction Rate Securities			Put Option Related to Auction Rate Securities			Total
Balance as of December 31, 2009	$	244,505		$	9,614		$	254,119
Redemptions of securities	(109,700		)	—			(109,700		)
Unrealized gain included in accumulated other comprehensive income (loss), net	5,721			—			5,721
Unrealized gain on auction rate securities included in the statement of operations	9,614			—			9,614
Unrealized loss on other investment-related assets included in the statement of operations	—			(9,614		)	(9,614		)
Balance as of September 30, 2010	$	150,140		$	—		$	150,140

Schedule of Contractual Maturities of Marketable Securities and Other Investment Related Assets

Contractual maturities of the Company’s marketable securities held at September 30, 2011 and December 31, 2010 were as follows (in thousands):

	September 30, 2011		December 31, 2010
Available-for-sale securities:
Due in 1 year or less	$	331,967	$	375,005
Due after 1 year through 5 years	384,654		499,275
Due after 10 years	118,775		137,256
	$	835,396	$	1,011,536

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Document and Entity Information	9 Months Ended
	Sep. 30, 2011	Nov. 04, 2011
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q3
Entity Registrant Name	AKAMAI TECHNOLOGIES INC
Entity Central Index Key	0001086222
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		179,431,186

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Goodwill and Other Intangible Assets (Narrative) (Details) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Goodwill and Other Intangible Assets [Abstract]
Amortization of other intangible assets	$ 4.2	$ 4.1	$ 12.8	$ 12.4
Future amortization expense recognized in remainder of current year			4.2
Future amortization expense 2012			15.9
Future amortization expense 2013			13.1
Future amortization expense 2014			7.6
Future amortization expense 2015			$ 5.1

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Net Income per Share (Tables)

9 Months Ended

Sep. 30, 2011

Earnings Per Share Reconciliation [Abstract]

Schedule of Components Used in Diluted and Basic Income Per Common Share

The following table sets forth the components used in the computation of basic and diluted net income per common share (in thousands, except per share data):

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2011		2010		2011		2010
Numerator:
Net income	$	42,285	$	39,709	$	140,823	$	118,710
Add back of interest expense on 1% convertible senior notes (net of taxes)	—		146		—		964
Numerator for diluted net income per common share	$	42,285	$	39,855	$	140,823	$	119,674
Denominator:
Denominator for basic net income per common share	183,085		181,457		185,515		175,292
Effect of dilutive securities:
Stock options	1,928		3,988		2,698		3,807
Effect of escrow contingencies	—		339		—		339
RSUs and deferred stock units	691		1,399		876		1,332
Assumed conversion of 1% convertible senior notes	—		4,088		—		9,484
Denominator for diluted net income per common share	185,704		191,271		189,089		190,254
Basic net income per common share	$	0.23	$	0.22	$	0.76	$	0.68
Diluted net income per common share	$	0.23	$	0.21	$	0.74	$	0.63

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Comprehensive Income (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2011	Dec. 31, 2010
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustments	$ 903	$ 2,103
Net unrealized (loss) gain on investments, net of taxes of $6,487 at September 30, 2011 and $5,005 at December 31, 2010	(10,202)	(7,844)
Total accumulated other comprehensive income (loss)	(9,299)	(5,741)
Accumulated other comprehensive income loss available for sale securities adjustment tax	$ 6,487	$ 5,005

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Net Income per Share

9 Months Ended

Sep. 30, 2011

Earnings Per Share Reconciliation [Abstract]

Net Income per Share

Net Income per Share

Basic net income per share is computed using the weighted average number of common shares outstanding during the applicable period. Diluted net income per share is computed using the weighted average number of common shares outstanding during the period, plus the dilutive effect of potential common stock. Potential common stock consists of shares issuable pursuant to stock options, deferred stock units, restricted stock units (“RSUs”) and convertible notes.

The following table sets forth the components used in the computation of basic and diluted net income per common share (in thousands, except per share data):

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2011		2010		2011		2010
Numerator:
Net income	$	42,285	$	39,709	$	140,823	$	118,710
Add back of interest expense on 1% convertible senior notes (net of taxes)	—		146		—		964
Numerator for diluted net income per common share	$	42,285	$	39,855	$	140,823	$	119,674
Denominator:
Denominator for basic net income per common share	183,085		181,457		185,515		175,292
Effect of dilutive securities:
Stock options	1,928		3,988		2,698		3,807
Effect of escrow contingencies	—		339		—		339
RSUs and deferred stock units	691		1,399		876		1,332
Assumed conversion of 1% convertible senior notes	—		4,088		—		9,484
Denominator for diluted net income per common share	185,704		191,271		189,089		190,254
Basic net income per common share	$	0.23	$	0.22	$	0.76	$	0.68
Diluted net income per common share	$	0.23	$	0.21	$	0.74	$	0.63

Outstanding options to acquire an aggregate of 4.1 million and 0.9 million shares of common stock for the three months ended September 30, 2011 and 2010, respectively, were excluded from the calculation of diluted earnings per share because the exercise prices of these stock options were greater than the average market price of the Company’s common stock during the respective periods. As a result, the effect of including these options would be anti-dilutive. Similarly, outstanding options to acquire an aggregate of 2.8 million and 1.4 million shares of common stock for the nine months endedSeptember 30, 2011 and 2010, respectively, were excluded from the calculation of diluted earnings per share because the exercise prices of the stock options were greater than the average market price of the Company's common stock during the respective periods. Additionally, 2.8 million and 3.0 million shares of common stock issuable in respect of outstanding performance-based RSUs were excluded from the computation of diluted net income per share for the three and nine months ended September 30, 2011, respectively, and 3.1 million and 3.3 million shares of common stock issuable in respect of outstanding performance-based RSUs were excluded from the computation of diluted net income per share for the three and nine months endedSeptember 30, 2010, respectively, because the performance conditions had not been met as of those dates.

The calculation of assumed proceeds used to determine the diluted weighted average shares outstanding under the treasury stock method in the periods presented was adjusted by tax windfalls and shortfalls associated with all of the Company’s outstanding stock awards. Such windfalls and shortfalls are computed by comparing the tax deductible amount of outstanding stock awards to their grant date fair values and multiplying the results by the applicable statutory tax rate. A positive result creates a windfall, which increases the assumed proceeds, and a negative result creates a shortfall, which reduces the assumed proceeds.

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Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2011

Stockholders' Equity Note [Abstract]

Schedule of Stock-Based Compensation Expense

The following table summarizes the components of total stock-based compensation expense included in the Company’s consolidated statements of operations for the three and nine months endedSeptember 30, 2011 and 2010 (in thousands):

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2011			2010			2011			2010
Stock-based compensation expense by type of award:
Stock options	$	3,312		$	3,843		$	10,518		$	11,240
Deferred stock units	—			—			1,885			1,885
RSUs	12,628			15,615			31,276			47,208
Shares issued under the Employee Stock Purchase Plan	1,142			1,049			4,192			3,237
Amounts capitalized as internal-use software	(1,941		)	(1,918		)	(5,406		)	(5,597		)
Total stock-based compensation before income taxes	15,141			18,589			42,465			57,973
Less: Income tax benefit	(5,746		)	(6,350		)	(15,119		)	(21,349		)
Total stock-based compensation, net of taxes	$	9,395		$	12,239		$	27,346		$	36,624
Effect of stock-based compensation on income by line item:
Cost of revenues	$	634		$	702		$	1,779		$	2,110
Research and development expense	2,629			3,687			7,515			11,222
Sales and marketing expense	6,951			8,862			19,112			26,662
General and administrative expense	4,927			5,338			14,059			17,979
Provision for income taxes	(5,746		)	(6,350		)	(15,119		)	(21,349		)
Total cost related to stock-based compensation, net of taxes	$	9,395		$	12,239		$	27,346		$	36,624

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Net Income per Share (Schedule of Components Used in Diluted and Basic Income Per Common Share) (Details) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Numerator [Abstract]
Net income	$ 42,285	$ 39,709	$ 140,823	$ 118,710
Add back of interest expense on 1% convertible senior notes (net of taxes)	0	146	0	964
Numerator for diluted net income per common share	$ 42,285	$ 39,855	$ 140,823	$ 119,674
Denominator [Abstract]
Denominator for basic net income per common share	183,085	181,457	185,515	175,292
Effect of dilutive securities:
Stock options	1,928	3,988	2,698	3,807
Effect of escrow contingencies	0	339	0	339
RSUs and deferred stock units	691	1,399	876	1,332
Assumed conversion of 1% convertible senior notes	0	4,088	0	9,484
Denominator for diluted net income per common share	185,704	191,271	189,089	190,254
Basic net income per common share	$ 0.23	$ 0.22	$ 0.76	$ 0.68
Diluted net income per common share	$ 0.23	$ 0.21	$ 0.74	$ 0.63

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Marketable Securities and Investments (Schedule of Activity of Major Classes of Assets Measured at Fair Value Using Level 3 Inputs) (Details) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		$ 254,119
Redemptions of securities		(109,700)
Unrealized gains included in accumulated other comprehensive income (loss), net		5,721
Unrealized gain (loss) included in the statement of operations		9,614
Ending balance		150,140
Auction Rate Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	137,256	244,505
Redemptions of securities	(15,450)	(109,700)
Unrealized gains included in accumulated other comprehensive income (loss), net	(3,031)	5,721
Unrealized gain (loss) included in the statement of operations		9,614
Ending balance	118,775	150,140
Auction Rate Securities [Member] | Put Option Related to Auction Rate Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		9,614
Unrealized gain (loss) included in the statement of operations		(9,614)
Ending balance		0
Put Option Related to Auction Rate Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gain (loss) included in the statement of operations		$ (9,614)

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Accrued Expenses and Other Current Liabilities (Tables)

9 Months Ended

Sep. 30, 2011

Accounts Payable and Accrued Liabilities, Current [Abstract]

Schedule of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (in thousands):

	September 30, 2011		December 31, 2010
Payroll and other related benefits	$	28,097	$	51,591
Bandwidth and co-location	21,189		21,787
Property, use and other taxes	29,806		15,849
Professional service fees	4,292		2,678
Contingent consideration	—		990
Other	1,881		1,766
Total	$	85,265	$	94,661

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Segment and Geographic Information

9 Months Ended

Sep. 30, 2011

Segment and Geographic Information [Abstract]

Segment and Geographic Information

Segment and Geographic Information

Akamai’s chief decision-maker, as defined under the authoritative guidance that discusses disclosures about segments of an enterprise and related information, is the Chief Executive Officer and the executive management team. As of September 30, 2011, Akamai operated in one industry segment: providing services for accelerating and improving the delivery of content and applications over the Internet. The Company is not organized by market and is managed and operated as one business. A single management team that reports to the Chief Executive Officer comprehensively manages the entire business. The Company does not operate any material separate lines of business or separate business entities with respect to its services. Accordingly, the Company does not accumulate discrete financial information with respect to separate product lines and does not have separately reportable segments as defined in the guidance.

The Company deploys its servers into networks worldwide. As of September 30, 2011, the Company had $184.7 million and $100.8 million of property and equipment, net of accumulated depreciation, located in the United States and in foreign locations, respectively. As of December 31, 2010, the Company had $174.9 million and $81.0 million of property and equipment, net of accumulated depreciation, located in the United States and in foreign locations, respectively.

Akamai sells its services through a direct sales force and through channel partners located both in the United States and abroad. The following table summarizes the percentage of the Company's revenues derived from operations outside of the United States:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2011		2010		2011		2010
Revenues derived from outside of the United States	29	%	28	%	29	%	28	%
Revenues derived from Europe	18	%	16	%	18	%	17	%

No single country outside the United States accounted for 10% or more of revenues during these periods. For each of the three- and nine- month periods ended September 30, 2011 and 2010, no customer accounted for 10% or more of total revenues.

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Business Acquisition

9 Months Ended

Sep. 30, 2011

Business Combinations [Abstract]

Business Acquisition

Business Acquisition

In June 2010, the Company acquired substantially all of the assets and liabilities of Velocitude LLC (“Velocitude”), in exchange for payment of approximately $12.0 million in cash. In addition, the Company recorded a liability of $2.4 million for contingent consideration related to the expected achievement of certain post-closing milestones. In May 2011, the Company made a final payment of $0.4 million related to the contingent consideration. The acquisition of substantially all of the assets of Velocitude was intended to further Akamai’s strategic position in the mobile market and was accounted for using the purchase method of accounting. The Company allocated $11.6 million of the cost of the acquisition to goodwill and $2.8 million to other intangible assets.

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Marketable Securities and Investments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2011 years countries customers	Dec. 31, 2010 years customers
Schedule of Available-for-sale Securities [Line Items]
Cash flow analysis weighted average discount rate	4.11%	3.21%
Cash flow analysis expected term (in years)	5	5
Estimated aggregate loss related to impairment of auction rate securities included in accumulated other comprehensive income loss	$ 16.6	$ 13.5
Auction rate securities classified as long term marketable securities on balance sheet	118.8	137.3
Auction Rate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost of auction rate securities	$ 135.4

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Comprehensive Income

9 Months Ended

Sep. 30, 2011

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Comprehensive Income

Comprehensive Income

The following table presents the calculation of comprehensive income and its components (in thousands):

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2011			2010			2011			2010
Net income	$	42,285		$	39,709		$	140,823		$	118,710
Other comprehensive income (loss):
Foreign currency translation adjustments	(5,588		)	6,581			(1,200		)	1,701
Change in unrealized gain (loss) on investments, net	(6,517		)	1,874			(3,840		)	5,864
Income tax expense related to unrealized gain (loss) on investments, net	2,507			(726		)	1,482			(2,272		)
Other comprehensive income (loss)	(9,598		)	7,729			(3,558		)	5,293
Comprehensive income	$	32,687		$	47,438		$	137,265		$	124,003

Accumulated other comprehensive income (loss) consisted of (in thousands):

	September 30, 2011			December 31, 2010
Foreign currency translation adjustment	$	903		$	2,103
Net unrealized (loss) gain on investments, net of taxes of $6,487 at September 30, 2011 and $5,005 at December 31, 2010	(10,202		)	(7,844		)
Total accumulated other comprehensive income (loss)	$	(9,299	)	$	(5,741	)

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Forward Currency Contracts

9 Months Ended

Sep. 30, 2011

Foreign Currency [Abstract]

Foreign Currency Disclosure [Text Block]

Forward Currency Contracts

Substantially all of the Company's foreign subsidiaries use the currency of the country in which it is located as its functional currency. Assets and liabilities are translated at exchange rates prevailing at the balance sheet dates. Revenues, costs and expenses are translated at the average exchange rates for the reported period. Gains and losses resulting from translation are recorded as a component of accumulated other comprehensive income (loss) within stockholders' equity. Gains and losses resulting from foreign currency transactions are recognized as other expense, net within the statement of operations.

The Company enters into short-term foreign currency forward contracts to offset the foreign exchange gains and losses generated by the re-measurement of certain assets and liabilities recorded in non-functional currencies. Changes in the fair value of these derivatives, as well as re-measurement gains and losses, are recognized in current earnings in other expense, net. As of September 30, 2011, the fair value of the forward currency contracts and the underlying net loss for the three and nine months endedSeptember 30, 2011 were deemed to be immaterial.

The Company's foreign currency forward contracts include credit risk to the extent that its counterparties may be unable to meet the terms of the agreements. The Company minimizes counterparty credit (or repayment) risk by entering into transactions only with major financial institutions of investment grade credit rating.

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Goodwill and Other Intangible Assets

9 Months Ended

Sep. 30, 2011

Goodwill and Other Intangible Assets [Abstract]

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets

The Company recorded goodwill and other intangible assets as a result of business acquisitions that occurred between 2000 and 2010. The Company also acquired license rights from the Massachusetts Institute of Technology in 1999.

Other intangible assets that are subject to amortization consist of the following (in thousands):

	September 30, 2011
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Completed technology	$	36,731	$	(21,173	)	$	15,558
Customer relationships	88,700		(57,940		)	30,760
Non-compete agreements	8,340		(4,970		)	3,370
Trademarks and trade names	800		(786		)	14
Acquired license rights	490		(490		)	—
Total	$	135,061	$	(85,359	)	$	49,702

	December 31, 2010
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Completed technology	$	36,731	$	(16,520	)	$	20,211
Customer relationships	88,700		(50,832		)	37,868
Non-compete agreements	8,340		(4,070		)	4,270
Trademarks and trade names	800		(693		)	107
Acquired license rights	490		(490		)	—
Total	$	135,061	$	(72,605	)	$	62,456

Aggregate expense related to amortization of other intangible assets for the three months ended September 30, 2011 and 2010 was $4.2 million and $4.1 million, respectively. For the nine months endedSeptember 30, 2011 and 2010, aggregate expense related to the amortization of other intangible assets was $12.8 million and $12.4 million, respectively. Based on the Company’s other intangible assets as of September 30, 2011, aggregate expense related to amortization of other intangible assets is expected to be $4.2 million for the remainder of 2011, and $15.9 million, $13.1 million, $7.6 million and $5.1 million for fiscal years 2012, 2013, 2014 and 2015, respectively.

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Restructuring (Tables)

9 Months Ended

Sep. 30, 2011

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Reserve by Type of Cost [Table Text Block]

The following table summarizes the accrual and usage of the restructuring charges (in millions):

	Leases		Severance			Total
Ending Balance, December 31, 2010	$	—	$	0.3		$	0.3
Restructuring charge	0.2		—			0.2
Cash payments	—		(0.3		)	(0.3		)
Ending Balance, September 30, 2011	$	0.2	$	—		$	0.2

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Stockholders' Equity

9 Months Ended

Sep. 30, 2011

Stockholders' Equity Note [Abstract]

Stockholders' Equity

Stockholders’ Equity

Stock Repurchase Program

On April 29, 2009, the Company announced that its Board of Directors had authorized a stock repurchase program permitting purchases of up to $100.0 million of the Company’s common stock from time to time on the open market or in privately negotiated transactions. On April 28, 2010, the Company announced that its Board of Directors had authorized an extension of the stock repurchase program permitting purchases of an additional $150.0 million of the Company’s common stock from time to time over the next twelve months commencing in May 2010 on the open market or in privately negotiated transactions. The unused balance from the May 2010 extension was not carried forward for future purchases. On April 19, 2011, the Company’s Board of Directors authorized a new program authorizing up to an additional $150.0 million of repurchases over the next twelve months commencing in May 2011. On August 8, 2011, the Company's Board of Directors authorized an additional $250.0 million of stock repurchases over the twelve-month period that commenced in May 2011. The total authorized funding for stock repurchases in that twelve-month period is now $400.0 million. The timing and amount of any shares repurchased will be determined by the Company’s management based on its evaluation of market conditions and other factors. Repurchases may also be made under a Rule 10b5-1 plan, which would permit the Company to repurchase shares when the Company might otherwise be precluded from doing so under insider trading laws. Subject to applicable securities laws, the Company may choose to suspend or discontinue the repurchase program at any time.

During the three and nine months endedSeptember 30, 2011, the Company repurchased 6.8 million and 9.4 million shares, respectively, of its common stock for $155.1 million and $248.4 million, respectively. During the three and nine months endedSeptember 30, 2010, the Company repurchased 0.5 million and 1.9 million shares, respectively, of its common stock for $22.7 million and $65.1 million, respectively. As of September 30, 2011, the Company had $206.0 million remaining available for future purchases of shares under the current repurchase program.

Stock-Based Compensation Expense

The following table summarizes the components of total stock-based compensation expense included in the Company’s consolidated statements of operations for the three and nine months endedSeptember 30, 2011 and 2010 (in thousands):

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2011			2010			2011			2010
Stock-based compensation expense by type of award:
Stock options	$	3,312		$	3,843		$	10,518		$	11,240
Deferred stock units	—			—			1,885			1,885
RSUs	12,628			15,615			31,276			47,208
Shares issued under the Employee Stock Purchase Plan	1,142			1,049			4,192			3,237
Amounts capitalized as internal-use software	(1,941		)	(1,918		)	(5,406		)	(5,597		)
Total stock-based compensation before income taxes	15,141			18,589			42,465			57,973
Less: Income tax benefit	(5,746		)	(6,350		)	(15,119		)	(21,349		)
Total stock-based compensation, net of taxes	$	9,395		$	12,239		$	27,346		$	36,624
Effect of stock-based compensation on income by line item:
Cost of revenues	$	634		$	702		$	1,779		$	2,110
Research and development expense	2,629			3,687			7,515			11,222
Sales and marketing expense	6,951			8,862			19,112			26,662
General and administrative expense	4,927			5,338			14,059			17,979
Provision for income taxes	(5,746		)	(6,350		)	(15,119		)	(21,349		)
Total cost related to stock-based compensation, net of taxes	$	9,395		$	12,239		$	27,346		$	36,624

In addition to the amounts of stock-based compensation reported in the table above, the Company’s consolidated statements of operations for the three and nine months ended September 30, 2011 also included stock-based compensation reflected as a component of amortization of capitalized internal-use software; such additional stock-based compensation for such period was $1.6 million and $5.6 million, respectively, before taxes. The Company's consolidated statements of operations for the three and nine months endedSeptember 30, 2010 also included stock-based compensation reflected as a component of amortization of capitalized internal-use software; such additional stock-based compensation for such period was $1.8 million and $5.5 million, respectively, before taxes.

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Income Taxes (Details)	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Income Taxes [Abstract]
Effective income tax rate	35.70%	37.00%

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Nature of Business and Basis of Presentation

9 Months Ended

Sep. 30, 2011

Nature of Business and Basis of Presentation [Abstract]

Nature of Business and Basis of Presentation

Nature of Business and Basis of Presentation

Akamai Technologies, Inc. (“Akamai” or the “Company”) provides services for accelerating and improving the delivery of content and applications over the Internet. Akamai’s globally distributed platform comprises thousands of servers in hundreds of networks in approximately 75 countries. The Company was incorporated in Delaware in 1998 and is headquartered in Cambridge, Massachusetts. Akamai currently operates in one industry segment: providing services for accelerating and improving delivery of content and applications over the Internet.

The accompanying interim consolidated financial statements are unaudited and have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information. These financial statements include the accounts of Akamai and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated in the accompanying financial statements.

Certain information and footnote disclosures normally included in the Company’s annual audited consolidated financial statements and accompanying notes have been condensed or omitted in these interim financial statements. Accordingly, the unaudited consolidated financial statements included herein should be read in conjunction with the audited consolidated financial statements and accompanying notes included in Akamai’s annual report on Form 10-K for the year ended December 31, 2010, filed with the Securities and Exchange Commission on March 1, 2011.

The results of operations presented in this quarterly report on Form 10-Q are not necessarily indicative of the results of operations that may be expected for any future periods. In the opinion of management, these unaudited consolidated financial statements include all adjustments and accruals, consisting only of normal recurring adjustments that are necessary for a fair statement of the results of all interim periods reported herein.

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Marketable Securities and Investments

9 Months Ended

Sep. 30, 2011

Marketable Securities [Abstract]

Marketable Securities and Investments

Marketable Securities and Investments

The Company accounts for financial assets and liabilities in accordance with a fair value measurement accounting standard. The accounting standard provides a framework for measuring fair value under GAAP and requires expanded disclosures regarding fair value measurements. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The accounting standard also establishes a fair value hierarchy that requires an entity to maximize the use of observable inputs, where available, and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair value:

Level 1 — Quoted prices in active markets for identical assets or liabilities.

Level 2 — Observable inputs, other than Level 1 prices, such as quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets and liabilities in markets that are inactive, or other inputs that are observable or can be corroborated by observable market data.

Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities, including certain pricing models, discounted cash flow methodologies and similar techniques.

The following is a summary of marketable securities held at September 30, 2011 and December 31, 2010 (in thousands):

			Gross Unrealized							Classification on Balance Sheet
As of September 30, 2011	Cost		Gains		Losses			Aggregate Fair Value		Short-term Marketable Securities		Long-term Marketable Securities
Available-for-sale securities:
Certificates of deposit	$	96	$	—	$	—		$	96	$	51	$	45
Commercial paper	59,989		—		(23		)	59,966		59,966		—
U.S. corporate debt securities	539,365		867		(995		)	539,237		261,922		277,315
U.S. government agency obligations	117,227		102		(7		)	117,322		10,028		107,294
Auction rate securities	135,350		—		(16,575		)	118,775		—		118,775
	$	852,027	$	969	$	(17,600	)	$	835,396	$	331,967	$	503,429
			Gross Unrealized							Classification on Balance Sheet
As of December 31, 2010	Cost		Gains		Losses			Aggregate Fair Value		Short-term Marketable Securities		Long-term Marketable Securities
Available-for-sale securities:
Certificates of deposit	$	96	$	—	$	—		$	96	$	51	$	45
Commercial paper	59,912		34		(2		)	59,944		59,944		—
U.S. corporate debt securities	651,855		1,416		(736		)	652,535		301,625		350,910
U.S. government agency obligations	161,722		102		(119		)	161,705		13,385		148,320
Auction rate securities	150,800		—		(13,544		)	137,256		—		137,256
	$	1,024,385	$	1,552	$	(14,401	)	$	1,011,536	$	375,005	$	636,531

Unrealized gains and unrealized temporary losses on investments classified as available-for-sale are included within accumulated other comprehensive income (loss). Upon realization, those amounts are reclassified from accumulated other comprehensive income (loss) to gain (loss) on investments, net in the statement of operations. Realized gains and losses and gains and losses on other-than-temporary impairments on investments are reflected in the income statement as gain (loss) on investments, net. As of September 30, 2011, the Company had recorded $135.4 million of auction rate securities ("ARS") at cost with gross unrealized losses that have been in a continuous loss position for more than 12 months.

The following table details the fair value measurements within the fair value hierarchy of the Company’s financial assets, including investments and cash equivalents, at September 30, 2011 and December 31, 2010 (in thousands):

			Fair Value Measurements at Reporting
	Total Fair Value at		Date Using
	September 30, 2011		Level 1		Level 2		Level 3
Money market funds	$	21,057	$	21,057	$	—	$	—
Certificates of deposit	96		96		—		—
Commercial paper	195,707		—		195,707		—
U.S. corporate debt securities	570,062		—		570,062		—
U.S. government agency obligations	117,322		—		117,322		—
Auction rate securities	118,775		—		—		118,775
	$	1,023,019	$	21,153	$	883,091	$	118,775
			Fair Value Measurements at Reporting
	Total Fair Value at		Date Using
	December 31, 2010		Level 1		Level 2		Level 3
Money market funds	$	55,648	$	55,648	$	—	$	—
Certificates of deposit	96		96		—		—
Commercial paper	59,944		—		59,944		—
U.S. corporate debt securities	652,535		—		652,535		—
U.S. government agency obligations	161,705		—		161,705		—
Auction rate securities	137,256		—		—		137,256
	$	1,067,184	$	55,744	$	874,184	$	137,256

The following tables reflect the activity for the Company’s major classes of financial assets measured at fair value using Level 3 inputs, consisting solely of ARS, for the nine month periods ended September 30, 2011 and 2010 (in thousands):

	Auction Rate Securities
Balance as of December 31, 2010	$	137,256
Redemptions of securities	(15,450		)
Unrealized loss included in accumulated other comprehensive income (loss), net	(3,031		)
Balance as of September 30, 2011	$	118,775

	Auction Rate Securities			Put Option Related to Auction Rate Securities			Total
Balance as of December 31, 2009	$	244,505		$	9,614		$	254,119
Redemptions of securities	(109,700		)	—			(109,700		)
Unrealized gain included in accumulated other comprehensive income (loss), net	5,721			—			5,721
Unrealized gain on auction rate securities included in the statement of operations	9,614			—			9,614
Unrealized loss on other investment-related assets included in the statement of operations	—			(9,614		)	(9,614		)
Balance as of September 30, 2010	$	150,140		$	—		$	150,140

As of September 30, 2011, the Company had grouped money market funds and certificates of deposit using a Level 1 valuation because market prices for such investments are readily available in active markets. As of September 30, 2011, the Company had grouped commercial paper, U.S. government agency obligations and U.S. corporate debt securities using a Level 2 valuation because quoted prices for identical or similar assets are available in markets that are inactive. As of September 30, 2011, the Company’s assets grouped using a Level 3 valuation consisted of ARS.

Historically, the carrying value (par value) of the Company’s ARS holdings approximated fair market value due to the resetting of variable interest rates in a “Dutch auction” process. Beginning in mid-February 2008 and continuing throughout the period ended September 30, 2011, however, the auctions for ARS held by the Company failed. As a result, the interest rates on ARS reset to the maximum rate per the applicable investment offering statements. The Company will not be able to liquidate affected ARS until a future auction on these investments is successful, a buyer is found outside the auction process, the securities are called or refinanced by the issuer, or the securities mature. Due to these liquidity issues, the Company used a discounted cash flow analysis to determine the estimated fair value of these investments. The discounted cash flow analysis considered the timing of expected future successful auctions, the impact of extended periods of maximum interest rates, collateralization of underlying security investments and the creditworthiness of the issuer. The discounted cash flow analysis as of September 30, 2011 assumed a weighted average discount rate of 4.11% and expected term of five years. The discount rate was determined using a proxy based upon the current market rates for recent debt offerings. The expected term was based on management’s estimate of future liquidity. As a result, as of September 30, 2011, the Company has estimated an aggregate loss of $16.6 million, which was related to the impairment of ARS deemed to be temporary and included in accumulated other comprehensive income (loss) within stockholders’ equity. The discounted cash flow analysis performed as of December 31, 2010 for ARS assumed a weighted average discount rate of 3.21% and expected term of five years. As a result, as of that date, the Company estimated an aggregate loss of $13.5 million, which was related to the impairment of ARS deemed to be temporary and included in accumulated other comprehensive income (loss) within stockholders’ equity.

The ARS the Company holds are primarily AAA-rated bonds, most of which are collateralized by federally guaranteed student loans as part of the Federal Family Education Loan Program through the U.S. Department of Education. The Company believes the quality of the collateral underlying these securities will enable it eventually to recover the Company’s principal balance.

Despite the failed auctions, the Company has continued to receive cash flows in the form of specified interest payments from the issuers of ARS. In addition, the Company does not believe it will be required to sell the ARS prior to a recovery of par value and currently intends to hold the investments until such time because it believes it has sufficient cash, cash equivalents and other marketable securities on-hand and from expected operating cash flows to fund its operations.

As of September 30, 2011 and December 31, 2010, the Company classified $118.8 million and $137.3 million, respectively, of ARS as long-term marketable securities on its consolidated balance sheet due to management’s estimate of its inability to liquidate these investments within the succeeding twelve months.

Contractual maturities of the Company’s marketable securities held at September 30, 2011 and December 31, 2010 were as follows (in thousands):

	September 30, 2011		December 31, 2010
Available-for-sale securities:
Due in 1 year or less	$	331,967	$	375,005
Due after 1 year through 5 years	384,654		499,275
Due after 10 years	118,775		137,256
	$	835,396	$	1,011,536

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Accounts Receivable (Schedule of Accounts Receivable) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 188,341	$ 180,598
Allowance for doubtful accounts	(2,127)	(1,329)
Reserve for cash-basis customers	(3,549)	(3,903)
Total accounts receivable reserves	(5,676)	(5,232)
Accounts receivable, net	182,665	175,366
Trade Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	127,210	116,212
Unbilled Revenues [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 61,131	$ 64,386

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Commitments, Contingencies and Guarantees (Tables)

9 Months Ended

Sep. 30, 2011

Commitments Contingencies and Guarantees [Abstract]

Minimum Aggregate Future Obligations Under Non-cancelable Leases

The expected minimum aggregate future obligations under non-cancelable leases as of September 30, 2011 were as follows (in thousands):

	Operating Leases
Remaining 2011	$	6,218
2012	23,682
2013	22,079
2014	20,919
2015	19,447
Thereafter	56,288
Total	$	148,633

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Segment and Geographic Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2011 countries customers	Sep. 30, 2010 customers countries	Sep. 30, 2011 years countries customers	Sep. 30, 2010 customers countries	Sep. 30, 2011 United States	Dec. 31, 2010 United States	Sep. 30, 2011 Foreign locations [Member]	Dec. 31, 2010 Foreign locations [Member]
Segment Reporting Information [Line Items]
Property and equipment, net					$ 184.7	$ 174.9	$ 100.8	$ 81.0
Percentage of revenue from outside U.S.	29.00%	28.00%	29.00%	28.00%
Percentage of revenues related to Europe	18.00%	16.00%	18.00%	17.00%
Number of foreign countries greater than 10% revenue	0	0	0	0
Number of customers accounted for 10% or more of total revenues	0	0	0	0

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Accounts Receivable

9 Months Ended

Sep. 30, 2011

Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]

Accounts Receivable

Accounts Receivable

Net accounts receivable consisted of the following (in thousands):

	September 30, 2011			December 31, 2010
Trade accounts receivable	$	127,210		$	116,212
Unbilled accounts	61,131			64,386
Gross accounts receivable	188,341			180,598
Allowance for doubtful accounts	(2,127		)	(1,329		)
Reserve for cash-basis customers	(3,549		)	(3,903		)
Total accounts receivable reserves	(5,676		)	(5,232		)
Accounts receivable, net	$	182,665		$	175,366

The Company’s accounts receivable balance includes unbilled amounts that represent revenues recorded for customers that are typically billed monthly in arrears. The Company records reserves against its accounts receivable balance. These reserves consist of allowances for doubtful accounts and reserves for cash-basis customers. Increases and decreases in the allowance for doubtful accounts are included as a component of general and administrative expenses. The Company’s reserve for cash-basis customers increases as services are provided to customers where collection is no longer assured. Increases to the reserve for cash-basis customers are recorded as reductions of revenues. The reserve decreases and revenue is recognized when and if cash payments are received.

Estimates are used in determining these reserves and are based upon the Company’s review of outstanding balances on a customer-specific, account-by-account basis. The allowance for doubtful accounts is based upon a review of customer receivables from prior sales with collection issues where the Company no longer believes that the customer has the ability to pay for services previously provided. The Company also performs ongoing credit evaluations of its customers. If such an evaluation indicates that payment is no longer reasonably assured for services provided, any future services provided to that customer will result in the creation of a cash-basis reserve until the Company receives consistent payments. The Company does not have any off-balance sheet credit exposure related to its customers.

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Net Income per Share (Narrative) (Details) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities	2.8	3.1	3.0	3.3
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities	4.1	0.9	2.8	1.4

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Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2011

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Comprehensive Income

The following table presents the calculation of comprehensive income and its components (in thousands):

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2011			2010			2011			2010
Net income	$	42,285		$	39,709		$	140,823		$	118,710
Other comprehensive income (loss):
Foreign currency translation adjustments	(5,588		)	6,581			(1,200		)	1,701
Change in unrealized gain (loss) on investments, net	(6,517		)	1,874			(3,840		)	5,864
Income tax expense related to unrealized gain (loss) on investments, net	2,507			(726		)	1,482			(2,272		)
Other comprehensive income (loss)	(9,598		)	7,729			(3,558		)	5,293
Comprehensive income	$	32,687		$	47,438		$	137,265		$	124,003

Schedule of Accumulated Other Comprehensive Income (Loss)

Accumulated other comprehensive income (loss) consisted of (in thousands):

	September 30, 2011			December 31, 2010
Foreign currency translation adjustment	$	903		$	2,103
Net unrealized (loss) gain on investments, net of taxes of $6,487 at September 30, 2011 and $5,005 at December 31, 2010	(10,202		)	(7,844		)
Total accumulated other comprehensive income (loss)	$	(9,299	)	$	(5,741	)

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Nature of Business and Basis of Presentation (Details)	Sep. 30, 2011 countries
Nature of Business and Basis of Presentation [Abstract]
Number of countries servers are in	75

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Accrued Expenses and Other Current Liabilities (Schedule of Accrued Expenses and Other Current Liabilities) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Accounts Payable and Accrued Liabilities, Current [Abstract]
Payroll and other related benefits	$ 28,097	$ 51,591
Bandwidth and co-location	21,189	21,787
Property, use and other taxes	29,806	15,849
Professional service fees	4,292	2,678
Contingent consideration	0	990
Other	1,881	1,766
Total	$ 85,265	$ 94,661

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Segment and Geographic Information (Tables)

9 Months Ended

Sep. 30, 2011

Segment Reporting [Abstract]

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

The following table summarizes the percentage of the Company's revenues derived from operations outside of the United States:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2011		2010		2011		2010
Revenues derived from outside of the United States	29	%	28	%	29	%	28	%
Revenues derived from Europe	18	%	16	%	18	%	17	%

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Income Taxes

9 Months Ended

Sep. 30, 2011

Income Taxes [Abstract]

Income Taxes

Income Taxes

The Company’s effective income tax rate, including discrete items, was 35.7% and 37.0% for the nine months endedSeptember 30, 2011 and 2010, respectively. The effective income tax rate is based upon estimated income for the year, the estimated composition of the income in different jurisdictions and discrete adjustments, if any, in the applicable quarterly periods including settlements of tax audits or assessments, the resolution or identification of tax position uncertainties, and acquisitions of other companies. The discrete items also include the tax effect of disqualifying dispositions of incentive stock options and shares purchased under the Company's Employee Stock Purchase Plan. For each of the nine months endedSeptember 30, 2011 and September 30, 2010, the effective income tax rate was higher than the federal statutory tax rate mainly due to the effects of accounting for stock-based compensation in accordance with the authoritative guidance for share-based payments, and state income tax expense.

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Accrued Expenses and Other Current Liabilities

9 Months Ended

Sep. 30, 2011

Accounts Payable and Accrued Liabilities, Current [Abstract]

Accrued Expenses and Other Current Liabilities

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (in thousands):

	September 30, 2011		December 31, 2010
Payroll and other related benefits	$	28,097	$	51,591
Bandwidth and co-location	21,189		21,787
Property, use and other taxes	29,806		15,849
Professional service fees	4,292		2,678
Contingent consideration	—		990
Other	1,881		1,766
Total	$	85,265	$	94,661

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Restructuring

9 Months Ended

Sep. 30, 2011

Restructuring and Related Activities [Abstract]

Restructuring and Related Activities Disclosure [Text Block]

Restructuring

During the three months ended September 30, 2011, the Company recorded $0.2 million as a restructuring charge in connection with an excess and vacated facility under a long-term non-cancelable lease that is scheduled to expire in June 2014. This charge includes estimated future lease payments, less estimated sublease income, for the vacated facility.

The following table summarizes the accrual and usage of the restructuring charges (in millions):

	Leases		Severance			Total
Ending Balance, December 31, 2010	$	—	$	0.3		$	0.3
Restructuring charge	0.2		—			0.2
Cash payments	—		(0.3		)	(0.3		)
Ending Balance, September 30, 2011	$	0.2	$	—		$	0.2

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Marketable Securities and Investments (Schedule of Contractual Maturities of Marketable Securities and Other Investment Related Assets) (Details) (Money Market Funds [Member], USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Money Market Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities due in 1 year or less	$ 331,967	$ 375,005
Available-for-sale securities due after 1 year through 5 years	384,654	499,275
Available-for-sale securities due after 10 years	118,775	137,256
Total Available-for-sale securities	$ 835,396	$ 1,011,536

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Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2011

Goodwill and Other Intangible Assets [Abstract]

Schedule of Other Intangible Assets

Other intangible assets that are subject to amortization consist of the following (in thousands):

	September 30, 2011
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Completed technology	$	36,731	$	(21,173	)	$	15,558
Customer relationships	88,700		(57,940		)	30,760
Non-compete agreements	8,340		(4,970		)	3,370
Trademarks and trade names	800		(786		)	14
Acquired license rights	490		(490		)	—
Total	$	135,061	$	(85,359	)	$	49,702

	December 31, 2010
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Completed technology	$	36,731	$	(16,520	)	$	20,211
Customer relationships	88,700		(50,832		)	37,868
Non-compete agreements	8,340		(4,070		)	4,270
Trademarks and trade names	800		(693		)	107
Acquired license rights	490		(490		)	—
Total	$	135,061	$	(72,605	)	$	62,456

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Consolidated Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income	$ 140,823	$ 118,710
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	124,228	104,113
Stock-based compensation expense	42,465	57,973
Provision for deferred income taxes, net	20,906	66,898
Amortization of deferred financing costs	0	457
Provision for doubtful accounts	1,236	2,107
Excess tax benefits from stock-based compensation	(11,460)	(22,379)
Loss on investments and disposal of property and equipment, net	(172)	(223)
Non-cash portion of loss on early extinguishment of debt	0	294
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(7,821)	(6,342)
Prepaid expenses and other current assets	(78)	(41,393)
Accounts payable, accrued expenses and other current liabilities	(5,268)	20,573
Deferred revenue	(1,386)	(7,126)
Accrued restructuring	(180)	(167)
Other non-current assets and liabilities	13,355	(1,399)
Net cash provided by operating activities	316,648	292,096
Cash flows from investing activities:
Cash paid for acquisition of business, net of cash acquired	(550)	(12,210)
Purchases of property and equipment	(105,769)	(119,591)
Capitalization of internal-use software costs	(30,523)	(23,754)
Purchases of short- and long-term marketable securities	(727,453)	(900,087)
Proceeds from sales of short- and long-term marketable securities	545,568	538,645
Proceeds from maturities of short- and long-term marketable securities	354,552	250,537
Increase in other investments	0	(500)
Proceeds from the sale of property and equipment	135	52
Decrease in restricted investments held for security deposits	221	8
Net cash provided by (used in) investing activities	36,181	(266,900)
Cash flows from financing activities:
Proceeds from the issuance of common stock under stock option and employee stock purchase plans	13,305	31,946
Excess tax benefits from stock-based compensation	11,460	22,379
Employee taxes paid related to net share settlement of equity awards	(5,680)	0
Repurchases of common stock	(247,738)	(65,126)
Net cash used in financing activities	(228,653)	(10,801)
Effects of exchange rate changes on cash and cash equivalents	(443)	1,867
Net increase in cash and cash equivalents	123,733	16,262
Cash and cash equivalents at beginning of period	231,866	181,305
Cash and cash equivalents at end of period	355,599	197,567
Supplemental disclosure of cash flow information:
Cash paid for income taxes	26,530	23,829
Cash paid for interest	0	967
Non-cash financing and investing activities:
Capitalization of stock-based compensation, net of impairments	5,406	5,597
Common stock issued upon conversion of 1% convertible senior notes	0	141,135
Common stock returned upon settlement of escrow claims related to prior business acquisitions	$ 0	$ (125)

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Subsequent Event

9 Months Ended

Sep. 30, 2011

Subsequent Events [Abstract]

Subsequent Events [Text Block]

Subsequent Event

On October 24, 2011, David W. Kenny resigned as the Company's president and as a Director. The Board of Directors elected Paul Sagan to the position of president; Mr. Sagan retains his titles of Chief Executive Officer and Director.

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Stockholders' Equity (Narrative) (Details) (USD $) In Millions	1 Months Ended				3 Months Ended		9 Months Ended
	Aug. 31, 2011	Apr. 30, 2011	Apr. 30, 2010	Apr. 30, 2009	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Stockholders' Equity Note [Abstract]
Amount of common stock repurchases authorized	$ 400.0			$ 100.0
Increase in stock repurchase authorized amount	250.0	150.0	150.0
Shares repurchased during period (shares)					6.8	0.5	9.4	1.9
Value of shares repurchased during period					155.1	22.7	248.4	65.1
Remaining amount available for future purchases of shares under approved repurchase program.							206.0
Additional stock-based compensation					$ 1.6	$ 1.8	$ 5.6	$ 5.5

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Accounts Receivable (Tables)

9 Months Ended

Sep. 30, 2011

Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]

Schedule of Accounts Receivable

Net accounts receivable consisted of the following (in thousands):

	September 30, 2011			December 31, 2010
Trade accounts receivable	$	127,210		$	116,212
Unbilled accounts	61,131			64,386
Gross accounts receivable	188,341			180,598
Allowance for doubtful accounts	(2,127		)	(1,329		)
Reserve for cash-basis customers	(3,549		)	(3,903		)
Total accounts receivable reserves	(5,676		)	(5,232		)
Accounts receivable, net	$	182,665		$	175,366

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Recent Accounting Pronouncements

9 Months Ended

Sep. 30, 2011

New Accounting Pronouncement or Change in Accounting Principle, Retrospective Adjustments [Abstract]

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In December 2010, the Financial Accounting Standards Board (“FASB”) issued an accounting standard update for business combinations specifically related to the disclosure of supplementary pro forma information for business combinations. This guidance specifies that pro forma disclosures should be reported as if the business combination that occurred during the current year had occurred as of the beginning of the comparable prior annual reporting period, and the pro forma disclosures must include a description of material, nonrecurring pro forma adjustments. This standard was effective for business combinations with an acquisition date of January 1, 2011 or later. The adoption of the guidance did not have an impact on the Company's financial position or results of operations.

In May 2011, the FASB issued amended guidance and disclosure requirements for fair value measurements. This guidance provides a consistent definition of fair value and ensures that the fair value measurement and disclosure requirements are similar between U.S. GAAP and international financial reporting standards. The guidance changes certain fair value measurement principles and enhances the disclosure requirements particularly for Level 3 fair value measurements. This standard will be effective for interim and annual periods beginning after December 15, 2011 and will be applied prospectively. The adoption of the guidance is not expected to have a material impact on the Company's consolidated financial statements.

In June 2011, the FASB issued amended disclosure requirements for the presentation of comprehensive income. The amended guidance eliminates the option to present components of other comprehensive income (“OCI”) as part of the statement of changes in equity. Under the amended guidance, all changes in OCI are to be presented either in a single continuous statement of comprehensive income or in two separate but consecutive financial statements. The changes will be effective January 1, 2012 and early adoption is permitted. There will be no impact to the Company's consolidated financial results as the amendments relate only to changes in financial statement presentation.

In September 2011, the FASB issued amended guidance that will simplify how entities test goodwill for impairment. Under the amended guidance, after assessment of certain qualitative factors, if it is determined to be more likely than not that the fair value of a reporting unit is less than its carrying amount, entities must perform the quantitative analysis of the goodwill impairment test. Otherwise, the quantitative test(s) are optional. The guidance is effective January 1, 2012 with early adoption permitted. The adoption of the guidance is not expected to have a material impact on the Company's financial position or results of operations.

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Concentration of Credit Risk

9 Months Ended

Sep. 30, 2011

Concentration of Credit Risk [Abstract]

Concentration of Credit Risk

Concentration of Credit Risk

Financial instruments that subject the Company to credit risk consist of cash and cash equivalents, marketable securities and accounts receivable. The Company maintains the majority of its cash, cash equivalents and marketable securities balances principally with domestic financial institutions that the Company believes are of high credit standing.

At September 30, 2011 and December 31, 2010, the Company held ARS, with an estimated fair value of $118.8 million and $137.3 million, respectively, that have experienced failed auctions preventing the Company from liquidating those investments. Based on its ability to access its cash and short-term investments and its expected cash flows, the Company does not anticipate the current lack of liquidity with respect to these ARS to have a material impact on its financial condition or results of operations during 2011. As of September 30, 2011, the Company had recorded a pre-tax cumulative unrealized loss of $16.6 million related to the temporary impairment of the ARS, which was included in accumulated other comprehensive income (loss) withing stockholders' equity on its consolidated balance sheet. See Note 4.

Concentrations of credit risk with respect to accounts receivable are limited to certain customers to which the Company makes substantial sales. The Company’s customer base consists of a large number of geographically dispersed customers diversified across numerous industries. To reduce risk, the Company routinely assesses the financial strength of its customers. Based on such assessments, the Company believes that its accounts receivable credit risk exposure is limited. As of September 30, 2011 and December 31, 2010, one customer accounted for more than 10% of the Company's accounts receivable. The Company believes that, at September 30, 2011, concentration of credit risk related to accounts receivable was not significant.

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Restructuring (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Restructuring Reserve [Roll Forward]
Beginning balance, December 31, 2010			$ 300,000
Restructuring charge	158,000	0	158,000	0
Restructuring Reserve, Settled with Cash			(300,000)
Ending balance, September 30, 2011	200,000		200,000
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Beginning balance, December 31, 2010			0
Restructuring charge			158,000
Restructuring Reserve, Settled with Cash			0
Ending balance, September 30, 2011	200,000		200,000
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning balance, December 31, 2010			300,000
Restructuring charge			0
Restructuring Reserve, Settled with Cash			(300,000)
Ending balance, September 30, 2011	$ 0		$ 0

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Business Acquisition (Details) (USD $)			3 Months Ended
	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2011 Velocitude [Member]	Sep. 30, 2010 Velocitude [Member]
Business Acquisition [Line Items]
Cost of acquisition of all assets and liabilities				$ 12,000,000
Liabilities for contingent consideration related to post closing milestones	0	990,000		2,400,000
Cash payment for achievement of post closing milestones	0	990,000		2,400,000
Final payment related to contingent consideration			400,000
Business acquisition purchase price allocation for goodwill			11,600,000
Identifiable intangible assets			$ 2,800,000

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Commitments, Contingencies and Guarantees

9 Months Ended

Sep. 30, 2011

Commitments Contingencies and Guarantees [Abstract]

Commitments, Contingencies and Guarantees

Commitments, Contingencies and Guarantees

Operating Lease Commitments

The Company leases its facilities under non-cancelable operating leases. These operating leases expire at various dates through December 2019 and generally require the payment of real estate taxes, insurance, maintenance and operating costs.

The expected minimum aggregate future obligations under non-cancelable leases as of September 30, 2011 were as follows (in thousands):

	Operating Leases
Remaining 2011	$	6,218
2012	23,682
2013	22,079
2014	20,919
2015	19,447
Thereafter	56,288
Total	$	148,633

Purchase Commitments

The Company has long-term commitments for bandwidth usage and co-location services with various network and Internet service providers. For the remainder of 2011 and for the years ending December 31, 2012, 2013, 2014 and 2015, the minimum commitments pursuant to these contracts in effect as of September 30, 2011, are approximately $37.0 million, $51.3 million, $8.6 million, $0.3 million and $0.1 million, respectively. In addition, as of September 30, 2011, the Company had entered into purchase orders with various vendors for aggregate purchase commitments of $50.6 million, which are expected to be paid over the next twelve months.

Litigation

Between July 2, 2001 and November 7, 2001, purported class action lawsuits seeking monetary damages were filed in the U.S. District Court for the Southern District of New York against the Company as well as against the underwriters of its October 28, 1999 initial public offering of common stock. The complaints were filed allegedly on behalf of persons who purchased the Company’s common stock during different time periods, all beginning on October 28, 1999 and ending on various dates. The complaints are similar and allege violations of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, primarily based on the allegation that the underwriters received undisclosed compensation in connection with the Company’s initial public offering. On April 19, 2002, a single consolidated amended complaint was filed, reiterating in one pleading the allegations contained in the previously filed separate actions. The consolidated amended complaint defines the alleged class period as October 28, 1999 through December 6, 2000. A Special Litigation Committee of the Company’s Board of Directors authorized management to negotiate a settlement of the pending claims substantially consistent with a Memorandum of Understanding that was negotiated among class plaintiffs, all issuer defendants and their insurers. The parties negotiated a settlement that was subject to approval by the District Court. On February 15, 2005, the Court issued an Opinion and Order preliminarily approving the settlement, provided that the defendants and plaintiffs agree to a modification narrowing the scope of the bar order set forth in the original settlement agreement. On June 25, 2007, the District Court signed an order terminating the settlement. On August 25, 2009, the lead plaintiffs filed a motion for final approval of a new proposed settlement (among plaintiffs, the underwriter defendants, the issuer defendants and the insurers for the issuer defendants), plan of distribution of the settlement fund, and certification of the settlement classes. On October 5, 2009, the District Court issued an opinion and order granting the lead plaintiffs’ motion for final approval of the settlement, approval of the plan of distribution of the settlement fund, and certification of the settlement classes. An order and final judgment was entered on November 4, 2009. Notices of appeal of the District Court’s October 5, 2009 opinion and order have been filed in the United States Court of Appeals for the Second Circuit by certain objecting plaintiffs. If the District Court’s order is upheld on appeal, the Company would have no material liability in connection with this litigation, and the litigation would be resolved. The Company has recorded no liability for this matter as of September 30, 2011.

In addition, on or about October 3, 2007, a purported Akamai shareholder, Vanessa Simmonds, filed a complaint in the U.S. District Court for the Western District of Washington, against the underwriters of its 1999 initial public offering of common stock, alleging violations of Section 16(b) of the Securities Exchange Act of 1934, as amended. The complaint alleges that the combined number of shares of the Company’s common stock beneficially owned by the lead underwriters and certain unnamed officers, directors and principal shareholders exceeded ten percent of its outstanding common stock from the date of the Company’s initial public offering on October 29, 1999, through at least October 28, 2000. The complaint further alleges that those entities and individuals were thus subject to the reporting requirements of Section 16(a) and the short-swing trading prohibition of Section 16(b) and failed to comply with those provisions. The complaint seeks to recover from the lead underwriters any “short-swing profits” obtained by them in violation of Section 16(b). The Company was named as a nominal defendant in the action but has no liability for the asserted claims. None of the Company’s directors or officers serving in such capacities at the time of its initial public offering are currently named as defendants in this action, but there can be no guarantee that the complaint will not be amended or a new complaint or suit filed to name such directors or officers as defendants in this action or another action alleging a violation of the same provisions of the Securities Exchange Act of 1934, as amended. On March 12, 2009, the Court granted a joint motion by the Company and other issuer defendants to dismiss the complaint without prejudice on the grounds that the plaintiff had failed to make an adequate demand on the Company prior to filing her complaint. In its order, the Court stated it would not permit the plaintiff to amend her demand letters while pursuing her claims in the litigation.

Because the Court dismissed the case on the grounds that it lacked subject matter jurisdiction, it did not specifically reach the issue of whether the plaintiff’s claims were barred by the applicable statute of limitations. However, the Court also granted a Joint Motion to Dismiss by the underwriter defendants in the action with respect to cases involving non-moving issuers, holding that the cases were barred by the applicable statute of limitations because the issuers’ shareholders had notice of the potential claims more than five years prior to filing suit. Ms. Simmonds appealed. On December 2, 2010, the Ninth Circuit Court of Appeals affirmed the District Court’s decision to dismiss the moving issuers’ cases (including the Company’s) on the grounds that plaintiff’s demand letters were insufficient to put the issuers on notice of the claims asserted against them and further ordered that the dismissals be made with prejudice. The Ninth Circuit, however, reversed and remanded the District Court’s decision on the underwriters’ motion to dismiss as to the claims arising from the non-moving issuers’ IPOs, finding plaintiff’s claims were not time-barred under the applicable statute of limitations. On January 18, 2011, the Ninth Circuit denied various parties’ petitions for rehearing and for rehearing en banc but stayed its rulings to allow for appeals to the United States Supreme Court. On April 5, 2011, Ms. Simmonds filed a Petition for Writ of Certiorari with the U.S. Supreme Court seeking reversal of the Ninth Circuit's decision relating to the adequacy of the pre-suit demand.  On April 15, 2011, underwriter defendants filed a Petition for Writ of Certiorari with the U.S. Supreme Court seeking reversal of the Ninth Circuit's decision relating to the statute of limitation issue.  On June 27, 2011, the Supreme Court denied Simmonds' petition regarding the demand issue and granted the underwriters' petition relating to the statute of limitations issue. The Company does not expect the results of this action to have a material adverse effect on its business, results of operations or financial condition. The Company has recorded no liability for this matter as of September 30, 2011.

The Company is party to various other litigation matters that management considers routine and incidental to its business. Management does not expect the results of any of these routine actions to have a material adverse effect on the Company’s business, results of operations or financial condition.

Guarantees

The Company has identified guarantees in accordance with the authoritative guidance for guarantor’s accounting and disclosure requirements for guarantees, including indirect guarantees of indebtedness of others, which is an interpretation of previous accounting statements and a rescission of previous guidance. This guidance elaborates on the existing disclosure requirements for most guarantees, including loan guarantees such as standby letters of credit. The guidance also clarifies that at the time an entity issues a guarantee, that entity must recognize an initial liability for the fair value, or market value, of the obligation it assumes under the guarantee and must disclose that information in its interim and annual financial statements. The Company evaluates losses for guarantees under the statement for accounting for contingencies, as interpreted by the guidance for guarantor’s accounting and disclosure requirements for guarantees, including direct guarantees of indebtedness of others. The Company considers such factors as the degree of probability that the Company would be required to satisfy the liability associated with the guarantee and the ability to make a reasonable estimate of the amount of loss. To date, the Company has not encountered material costs as a result of such obligations and has not accrued any liabilities related to such obligations in its financial statements. The fair value of the Company’s outstanding guarantees as of September 30, 2011 was determined to be immaterial.

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Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 355,599	$ 231,866
Marketable securities (including restricted securities of $51 and $272 at September 30, 2011 and December 31, 2010, respectively)	331,967	375,005
Accounts receivable, net of reserves of $5,676 and $5,232 at September 30, 2011 and December 31, 2010, respectively	182,665	175,366
Prepaid expenses and other current assets	47,085	48,029
Deferred income tax assets	7,163	28,201
Total current assets	924,479	858,467
Property and equipment, net	285,476	255,929
Marketable securities (including restricted securities of $45 at September 30, 2011 and December 31, 2010)	503,429	636,531
Goodwill	452,914	452,914
Other intangible assets, net	49,702	62,456
Deferred income tax assets	76,747	75,226
Other assets	9,210	11,153
Total assets	2,301,957	2,352,676
Current liabilities:
Accounts payable	30,349	26,375
Accrued expenses and other current liabilities	85,265	94,661
Deferred revenue	23,201	23,808
Accrued restructuring	63	307
Total current liabilities	138,878	145,151
Other liabilities	38,013	26,278
Deferred revenue	3,055	3,642
Total liabilities	179,946	175,071
Commitments, contingencies and guarantees (Note 15)
Stockholders' equity:
Preferred stock, $0.01 par value; 5,000,000 shares authorized; 700,000 shares designated as Series A Junior Participating Preferred Stock; no shares issued or outstanding	0	0
Common stock, $0.01 par value; 700,000,000 shares authorized; 194,682,252 shares issued and 179,519,564 shares outstanding at September 30, 2011 and 192,383,121 shares issued and 186,603,380 shares outstanding at December 31, 2010	1,947	1,924
Additional paid-in capital	5,025,797	4,970,278
Accumulated other comprehensive income (loss)	(9,299)	(5,741)
Treasury stock, at cost, 15,162,688 shares at September 30, 2011 and 5,779,741 shares at December 31, 2010	(406,662)	(158,261)
Accumulated deficit	(2,489,772)	(2,630,595)
Total stockholders' equity	2,122,011	2,177,605
Total liabilities and stockholders' equity	$ 2,301,957	$ 2,352,676

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Marketable Securities and Investments (Marketable Securities) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, cost	$ 852,027	$ 1,024,385
Gross unrealized gains, trading securities	969	1,552
Gross unrealized losses	(17,600)	(14,401)
Short-term marketable securities	331,967	375,005
Long-term marketable securities	503,429	636,531
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, cost	96	96
Gross unrealized gains, trading securities	0	0
Gross unrealized losses	0	0
Short-term marketable securities	51	51
Long-term marketable securities	45	45
Certificates of Deposit [Member] | Money Market Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Aggregate Fair value	96	96
Commercial Paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, cost	59,989	59,912
Gross unrealized gains, trading securities	0	34
Gross unrealized losses	(23)	(2)
Short-term marketable securities	59,966	59,944
Long-term marketable securities	0	0
Commercial Paper [Member] | Money Market Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Aggregate Fair value	59,966	59,944
U.S. Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, cost	539,365	651,855
Gross unrealized gains, trading securities	867	1,416
Gross unrealized losses	(995)	(736)
Short-term marketable securities	261,922	301,625
Long-term marketable securities	277,315	350,910
U.S. Corporate Debt Securities [Member] | Money Market Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Aggregate Fair value	539,237	652,535
U.S. Government Agencies Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, cost	117,227	161,722
Gross unrealized gains, trading securities	102	102
Gross unrealized losses	(7)	(119)
Short-term marketable securities	10,028	13,385
Long-term marketable securities	107,294	148,320
U.S. Government Agencies Obligations [Member] | Money Market Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Aggregate Fair value	117,322	161,705
Auction Rate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, cost	135,350	150,800
Gross unrealized gains, trading securities	0	0
Gross unrealized losses	(16,575)	(13,544)
Aggregate Fair value	118,775	137,256
Short-term marketable securities	0	0
Long-term marketable securities	118,775	137,256
Auction Rate Securities [Member] | Money Market Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Aggregate Fair value	118,775	137,256
Money Market Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Aggregate Fair value	$ 835,396	$ 1,011,536

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Goodwill and Other Intangible Assets (Schedule of Other Intangible Assets) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 135,061	$ 135,061
Accumulated amortization	(85,359)	(72,605)
Net carrying amount	49,702	62,456
Completed Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	36,731	36,731
Accumulated amortization	(21,173)	(16,520)
Net carrying amount	15,558	20,211
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	88,700	88,700
Accumulated amortization	(57,940)	(50,832)
Net carrying amount	30,760	37,868
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	8,340	8,340
Accumulated amortization	(4,970)	(4,070)
Net carrying amount	3,370	4,270
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	800	800
Accumulated amortization	(786)	(693)
Net carrying amount	14	107
Acquired License Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	490	490
Accumulated amortization	(490)	(490)
Net carrying amount	$ 0	$ 0

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Stockholders' Equity (Schedule of Stock Based Compensation Expense) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation before income taxes	$ 15,141	$ 18,589	$ 42,465	$ 57,973
Less: Income tax benefit	(5,746)	(6,350)	(15,119)	(21,349)
Total stock-based compensation, net of taxes	9,395	12,239	27,346	36,624
Cost of Revenue [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect of stock-based compensation on income	634	702	1,779	2,110
General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect of stock-based compensation on income	4,927	5,338	14,059	17,979
Sales and Marketing Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect of stock-based compensation on income	6,951	8,862	19,112	26,662
Research and Development Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect of stock-based compensation on income	2,629	3,687	7,515	11,222
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation before income taxes	3,312	3,843	10,518	11,240
Deferred Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation before income taxes	0	0	1,885	1,885
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation before income taxes	12,628	15,615	31,276	47,208
1999 ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation before income taxes	1,142	1,049	4,192	3,237
Capitalized Internal Use Software [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation before income taxes	$ (1,941)	$ (1,918)	$ (5,406)	$ (5,597)

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Comprehensive Income (Schedule of Comprehensive Income) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net income	$ 42,285	$ 39,709	$ 140,823	$ 118,710
Foreign currency translation adjustments	(5,588)	6,581	(1,200)	1,701
Change in unrealized gain (loss) on investments, net	(6,517)	1,874	(3,840)	5,864
Income tax expense related to unrealized gain (loss) on investments, net	2,507	(726)	1,482	(2,272)
Other comprehensive income (loss)	(9,598)	7,729	(3,558)	5,293
Comprehensive income	$ 32,687	$ 47,438	$ 137,265	$ 124,003

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Commitments, Contingencies and Guarantees (Minimum Aggregate Future Obligations Under Non-cancelable Leases) (Details) (USD $) In Thousands	Sep. 30, 2011
Commitments Contingencies and Guarantees [Abstract]
Remaining 2011	$ 6,218
2012	23,682
2013	22,079
2014	20,919
2015	19,447
Thereafter	56,288
Total	$ 148,633

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Marketable Securities and Investments (Schedule of Fair Value Measurement) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Money Market Funds [Member] | Total Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 21,057	$ 55,648
Total Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments and cash equivalents	1,023,019	1,067,184
Total Fair Value [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	96	96
Total Fair Value [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	195,707	59,944
Total Fair Value [Member] | U.S. Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	570,062	652,535
Total Fair Value [Member] | U.S. Government Agencies Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	117,322	161,705
Total Fair Value [Member] | Auction Rate Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	118,775	137,256
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	21,057	55,648
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments and cash equivalents	21,153	55,744
Fair Value, Inputs, Level 1 [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	96	96
Fair Value, Inputs, Level 1 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 1 [Member] | U.S. Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 1 [Member] | U.S. Government Agencies Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 1 [Member] | Auction Rate Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Money Market Funds [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments and cash equivalents	883,091	874,184
Level 2 [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Level 2 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	195,707	59,944
Level 2 [Member] | U.S. Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	570,062	652,535
Level 2 [Member] | U.S. Government Agencies Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	117,322	161,705
Level 2 [Member] | Auction Rate Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Money Market Funds [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments and cash equivalents	118,775	137,256
Level 3 [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Level 3 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Level 3 [Member] | U.S. Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Level 3 [Member] | U.S. Government Agencies Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Level 3 [Member] | Auction Rate Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	118,775	137,256
Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	$ 835,396	$ 1,011,536