Condensed Consolidated Statements of Operations (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenue:
Consumer revenue	$ 151,930	$ 128,201
Enterprise revenue	7,339	6,207
Total revenue	159,269	134,408
Cost of services	39,986	34,556
Gross profit	119,283	99,852
Costs and expenses:
Sales and marketing	89,704	77,079
Technology and development	21,222	16,866
General and administrative	24,222	18,955
Amortization of acquired intangible assets	3,042	2,084
Total costs and expenses	138,190	114,984
Loss from operations	(18,907)	(15,132)
Other income (expense):
Interest expense	(111)	(89)
Interest income	299	117
Other, net	(5)	(80)
Total other income (expense)	183	(52)
Loss before income taxes	(18,724)	(15,184)
Income tax benefit	(7,498)	(6,026)
Net loss	$ (11,226)	$ (9,158)
Net loss per share
Basic and diluted (in dollars per share)	$ (0.12)	$ (0.10)
Weighted-average common shares outstanding used in computing net loss per share:
Basic and diluted (in shares)	94,748,645	94,033,035