CONSOLIDATED STATEMENT OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2011	Mar. 31, 2010
Revenue	$ 460,213	$ 378,178
Costs and expenses:
Cost of revenue (exclusive of depreciation shown separately below)	172,718	131,149
Selling and marketing expense	140,250	130,381
General and administrative expense	76,291	73,964
Product development expense	17,722	14,792
Depreciation	13,439	15,793
Amortization of intangibles	2,457	3,174
Total costs and expenses	422,877	369,253
Operating income	37,336	8,925
Equity in losses of unconsolidated affiliates	(1,879)	(22,613)
Other income, net	752	5,236
Earnings (loss) from continuing operations before income taxes	36,209	(8,452)
Income tax provision	(16,041)	(6,145)
Earnings (loss) from continuing operations	20,168	(14,597)
Loss from discontinued operations, net of tax	(1,948)	(4,727)
Net earnings (loss)	18,220	(19,324)
Net (earnings) loss attributable to noncontrolling interests	(150)	619
Net earnings (loss) attributable to IAC shareholders	18,070	(18,705)
Per share information attributable to IAC shareholders:
Basic earnings (loss) per share from continuing operations (in dollars per share)	$ 0.22	$ (0.12)
Diluted earnings (loss) per share from continuing operations (in dollars per share)	$ 0.21	$ (0.12)
Basic earnings (loss) per share (in dollars per share)	$ 0.20	$ (0.16)
Diluted earnings (loss) per share (in dollars per share)	$ 0.19	$ (0.16)
Non-cash compensation expense by function:
Total non-cash compensation expense	20,161	21,545
Cost of revenue
Non-cash compensation expense by function:
Total non-cash compensation expense	1,082	941
Selling and marketing expense
Non-cash compensation expense by function:
Total non-cash compensation expense	1,035	983
General and administrative expense
Non-cash compensation expense by function:
Total non-cash compensation expense	16,400	18,143
Product development expense
Non-cash compensation expense by function:
Total non-cash compensation expense	$ 1,644	$ 1,478