SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Segment reporting information
Revenue	$ 516,884	$ 412,966	$ 1,462,501	$ 1,185,388
Operating Income (Loss)	46,740	37,684	142,307	71,242
Operating Income Before Amortization	74,163	57,044	217,555	141,125
Depreciation	17,484	14,598	43,373	47,016
Reconciliation of Operating Income Before Amortization to operating income (loss) for the entity's reportable segments
Operating Income Before Amortization	74,163	57,044	217,555	141,125
Non-Cash Compensation Expense	(22,885)	(17,058)	(66,053)	(59,651)
Amortization of Intangibles	(4,538)	(2,302)	(9,195)	(10,232)
Operating Income (Loss)	46,740	37,684	142,307	71,242
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Segment reporting information
Revenue	273,345	205,075	774,385	601,230
Operating Income (Loss)	45,023	28,872	144,420	91,546
Operating Income Before Amortization	45,848	29,268	145,802	92,852
Depreciation	11,170	8,249	24,518	27,264
Reconciliation of Operating Income Before Amortization to operating income (loss) for the entity's reportable segments
Operating Income Before Amortization	45,848	29,268	145,802	92,852
Non-Cash Compensation Expense		(59)		(295)
Amortization of Intangibles	(825)	(337)	(1,382)	(1,011)
Operating Income (Loss)	45,023	28,872	144,420	91,546
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Segment reporting information
Revenue	132,328	106,197	360,354	292,433
Operating Income (Loss)	36,677	38,126	101,105	77,318
Operating Income Before Amortization	40,207	39,354	107,530	83,264
Depreciation	2,481	2,612	7,059	8,518
Reconciliation of Operating Income Before Amortization to operating income (loss) for the entity's reportable segments
Operating Income Before Amortization	40,207	39,354	107,530	83,264
Non-Cash Compensation Expense	(423)		(423)	153
Amortization of Intangibles	(3,107)	(1,228)	(6,002)	(6,099)
Operating Income (Loss)	36,677	38,126	101,105	77,318
ServiceMagic
Segment reporting information
Revenue	55,061	48,397	157,458	140,128
Operating Income (Loss)	7,041	6,205	19,088	14,349
Operating Income Before Amortization	7,425	6,692	20,224	15,676
Depreciation	1,092	1,005	3,276	3,001
Reconciliation of Operating Income Before Amortization to operating income (loss) for the entity's reportable segments
Operating Income Before Amortization	7,425	6,692	20,224	15,676
Amortization of Intangibles	(384)	(487)	(1,136)	(1,327)
Operating Income (Loss)	7,041	6,205	19,088	14,349
Media and Other
Segment reporting information
Revenue	56,384	54,029	171,431	153,158
Operating Income (Loss)	(3,717)	(2,824)	(10,680)	(9,662)
Operating Income Before Amortization	(3,216)	(2,161)	(9,719)	(7,175)
Depreciation	662	576	2,089	1,682
Reconciliation of Operating Income Before Amortization to operating income (loss) for the entity's reportable segments
Operating Income Before Amortization	(3,216)	(2,161)	(9,719)	(7,175)
Non-Cash Compensation Expense	(279)	(413)	(286)	(692)
Amortization of Intangibles	(222)	(250)	(675)	(1,795)
Operating Income (Loss)	(3,717)	(2,824)	(10,680)	(9,662)
Inter-segment elimination
Segment reporting information
Revenue	(234)	(732)	(1,127)	(1,561)
Corporate
Segment reporting information
Operating Income (Loss)	(38,284)	(32,695)	(111,626)	(102,309)
Operating Income Before Amortization	(16,101)	(16,109)	(46,282)	(43,492)
Depreciation	2,079	2,156	6,431	6,551
Reconciliation of Operating Income Before Amortization to operating income (loss) for the entity's reportable segments
Operating Income Before Amortization	(16,101)	(16,109)	(46,282)	(43,492)
Non-Cash Compensation Expense	(22,183)	(16,586)	(65,344)	(58,817)
Operating Income (Loss)	$ (38,284)	$ (32,695)	$ (111,626)	$ (102,309)