2.	Summary of Significant Accounting Policies

Revenue Recognition

Syndicated or recurring products and services are licensed on a contractual basis. Revenues for such products and services are recognized over the term of the license agreement as products or services are delivered. Customer billings in advance of delivery are recorded as a deferred revenue liability. Deferred revenue relates primarily to quantitative radio measurement surveys which are delivered to customers in the subsequent quarterly or monthly period. Software revenue is recognized ratably over the life of the agreement. Through the standard software license agreement, customers are provided enhancements and upgrades, if any, that occur during their license term at no additional cost. Customer agreements with multiple licenses are reviewed for separate revenue recognition for deliverables specified by the agreements. Sales tax charged to customers is presented on a net basis within the consolidated income statement and excluded from revenues.

Expense Recognition

Direct costs associated with the Company's data collection, diary processing and maintenance of the Company's Portable People Meter^™ (PPM^™) ratings service are recognized when incurred and are included in cost of revenue. Selling, general, and administrative expenses are recognized when incurred. Research and development expenses are recognized when incurred and consist primarily of expenses associated with the development of new products and customer software and other technical expenses including maintenance of operations and reporting systems.

Cash Equivalents

Cash equivalents consist primarily of highly liquid investments with insignificant interest rate risk and original maturities of three months or less.

Trade Accounts Receivable

Trade accounts receivable are recorded at invoiced amounts. The allowance for doubtful accounts is estimated based on historical trends of past due accounts and write-offs, as well as a review of specific accounts.

Inventories

Inventories consist of PPM equipment held for resale to international licensees of the PPM service. The inventory is accounted for on a first-in, first-out (FIFO) basis, and is included in prepaids and other current assets in the accompanying consolidated balance sheet.

Property and Equipment

Property and equipment are recorded at cost and depreciated or amortized on a straight-line basis over the estimated useful lives of the assets, which are as follows:


Computer equipment		3 years
Purchased and internally developed software		3 – 5 years
Leasehold improvements		Shorter of useful life or life of lease
Machinery, furniture and fixtures		3 – 6 years

Repairs and maintenance are charged to expense as incurred. Gains and losses on dispositions are included in the consolidated results of operations at the date of disposal.

Expenditures for significant software purchases and software developed for internal use are capitalized. For software developed for internal use, external direct costs for materials and services and certain payroll and related fringe benefit costs are capitalized as well. The costs are capitalized from the time that the preliminary project stage is completed and management considers it probable that the software will be used to perform the function intended until the time the software is placed in service for its intended use. Once the software is placed in service, the capitalized costs are amortized over periods of three to five years. Management performs an assessment quarterly to determine if it is probable that all capitalized software will be used to perform its intended function. If an impairment exists, the software cost is written down to estimated fair value.

Equity and Other Investments

Equity and other investments are accounted for using either the equity method or the cost method, depending upon the nature of the Company's investment interests. The equity method is used when the Company has an ownership interest of 50% or less and the ability to exercise significant influence or has a majority ownership interest but does not have the ability to exercise effective control. The cost method is used when the Company has an ownership interest of 20% or less and does not have the ability to exercise significant influence.

Goodwill and Other Intangible Assets

Goodwill represents the excess of costs over fair value of assets of businesses acquired. Goodwill and other intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized. Intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and are regularly reviewed for impairment.

Goodwill and intangible assets not subject to amortization are tested annually for impairment or more frequently if events and circumstances indicate that the asset might be impaired. The Company performs its annual impairment test at the reporting unit level as of January 1st for each fiscal year. An impairment loss is recognized to the extent that the carrying amount of the asset exceeds its fair value.

Impairment of Long-Lived Assets

Long-lived assets, such as property, plant, and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell, and effective with the date classified as held for sale, are no longer depreciated. The assets and liabilities of a disposal group classified as held for sale, as well as the results of operations and cash flows of the disposal group, if any, are presented separately in the appropriate sections of the consolidated financial statements for all periods presented.

Income Taxes

Income taxes are accounted for using the asset and liability method. Deferred tax assets and liabilities are recognized based on the future tax consequences attributable to differences between financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to be applied to taxable income in years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rate is recognized in income in the period that includes the enactment date. The Company recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs.

Net Income per Weighted Average Common Share

The computations of basic and diluted net income per weighted-average common share for 2011, 2010, and 2009 are based on the Company's weighted-average shares of common stock and potentially dilutive securities outstanding. Potentially dilutive securities are calculated in accordance with the treasury stock method, which assumes the proceeds from the exercise of all stock options are used to repurchase the Company's common stock at the average market price for the period. As of December 31, 2011, 2010, and 2009, there were stock options to purchase 2,043,774 shares, 2,020,767 shares, and 2,852,161 shares of the Company's common stock outstanding, respectively, of which stock options to purchase 1,116,106 shares, 1,179,840 shares, and 2,052,132 shares of the Company's common stock, respectively, were excluded from the computation of the diluted net income per weighted-average common share, either because the stock options' exercise prices were greater than the average market price of the Company's common shares or assumed repurchases from proceeds from the stock options' exercise were antidilutive.

Translation of Foreign Currencies

Financial statements of foreign subsidiaries are translated into United States dollars at current rates at the end of the period except that revenue and expenses are translated at average current exchange rates during each reporting period. Net translation exchange gains or losses and the effect of exchange rate changes on intercompany transactions of a long-term nature are recorded in accumulated other comprehensive loss in stockholders' equity. Gains and losses from translation of assets and liabilities denominated in other than the functional currency of the operation are recorded in income as incurred.

Advertising Expense

The Company recognizes advertising expense the first time advertising takes place. Advertising expense for the years ended December 31, 2011, 2010 and 2009, was $1.4 million, $1.0 million, and $2.3 million, respectively.

Accounting Estimates

The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant items, if any, subject to such estimates and assumptions may include: valuation allowances for receivables and deferred income tax assets, loss contingencies, and assets and obligations related to employee benefits. Actual results could differ from those estimates.

Legal Matters

The Company is involved, from time to time, in litigation and proceedings arising out of the ordinary course of business. Legal costs for services rendered in the course of these proceedings are charged to expense as they are incurred.

Leases

The Company conducts all of its operations in leased facilities and leases certain equipment which have minimum lease obligations under noncancelable operating leases. Certain of these leases contain rent escalations based on specified percentages. Most of the leases contain renewal options and require payments for taxes, insurance and maintenance. Rent expense is charged to operations as incurred except for escalating rents, which are charged to operations on a straight-line basis over the life of the lease.

New Accounting Pronouncements

Testing Goodwill for Impairment. In September 2011, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update No. 2011-08, Intangibles — Goodwill and Other (Topic 350) — Testing Goodwill for Impairment ("ASU 2011-08"), to allow entities to use a qualitative approach to test goodwill for impairment. ASU 2011-08 permits an entity to first perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If it is concluded that this is the case, it is necessary to perform the currently prescribed two-step goodwill impairment test. Otherwise, the two-step goodwill impairment test is not required. ASU 2011-08 is effective for the Company for interim and annual periods ended during 2012, with earlier application permitted. The Company does not expect its pending adoption of this guidance to have a material impact to the Company's consolidated financial statements.

Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements. In May 2011, the FASB issued Accounting Standards Update No. 2011-04, Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and International Financial Reporting Standards (Topic 820) — Fair Value Measurement ("ASU 2011-04"), to provide a consistent definition of fair value and ensure that the fair value measurement and disclosure requirements are similar between U.S. Generally Accepted Accounting Principles ("GAAP") and International Financial Reporting Standards. ASU 2011-04 changes certain fair value measurement principles and enhances the disclosure requirements particularly for Level 3 fair value measurements. ASU 2011-04 is effective for the Company for interim and annual periods ended during 2012 and will be applied prospectively. The Company does not expect its pending adoption of this guidance to have a material impact to the Company's consolidated financial statements.