Condensed Consolidated Statements of Operations (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue:
Consumer revenue	$ 144,648	$ 116,115	$ 411,178	$ 326,448
Enterprise revenue	7,304	6,916	20,139	19,882
Total revenue	151,952	123,031	431,317	346,330
Cost of services	33,988	30,327	103,470	89,675
Gross profit	117,964	92,704	327,847	256,655
Costs and expenses:
Sales and marketing	62,850	51,818	209,470	166,710
Technology and development	19,396	12,341	52,928	37,996
General and administrative	120,984	16,781	160,815	45,489
Amortization of acquired intangible assets	2,084	2,231	6,251	6,693
Total costs and expenses	205,314	83,171	429,464	256,888
Income (loss) from operations	(87,350)	9,533	(101,617)	(233)
Other income (expense):
Interest expense	(89)	(89)	(265)	(264)
Interest income	219	73	498	189
Other, net	0	(134)	(183)	(151)
Total other income (expense)	130	(150)	50	(226)
Income (loss) before income taxes	(87,220)	9,383	(101,567)	(459)
Income tax expense (benefit)	(22,075)	3,933	(27,784)	(116)
Net income (loss)	$ (65,145)	$ 5,450	$ (73,783)	$ (343)
Net income (loss) per share
Basic (in dollars per share)	$ (0.68)	$ 0.06	$ (0.78)	$ 0.00
Diluted (in dollars per share)	$ (0.68)	$ 0.06	$ (0.78)	$ 0.00
Weighted-average common shares outstanding used in computing net income (loss) per share:
Basic (number of shares)	95,340,136	92,924,516	94,659,931	92,436,628
Diluted (number of shares)	95,340,136	98,524,034	94,659,931	92,436,628