Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Condensed Consolidated Statements of Operations
Revenue	$ 62,769	$ 21,507	$ 140,852	$ 53,703
Operating expenses :
Cost of revenue	19,158	5,361	44,587	13,252
Selling and marketing	22,874	8,803	60,636	30,443
Product and technology	11,317	5,701	34,158	18,124
General and administrative	22,034	5,490	66,463	15,539
Gain on divestiture of businesses				(1,442)
Total operating expenses	75,383	25,355	205,844	75,916
Operating loss	(12,614)	(3,848)	(64,992)	(22,213)
Other income (expense):
Interest expense	(1,857)	(3,952)	(4,296)	(10,329)
Change in fair value of earnout liability	7,413		(15,388)
Change in fair value of private warrant liability	2,692		(17,521)
Gain (loss) on extinguishment of debt	(3,133)	(2,532)	5,110	1,077
Investment income and realized gains, net of investment expenses	248		448
Other income (expense), net	316	1,418	225	(2,050)
Total other income (expense)	5,679	(5,066)	(31,422)	(11,302)
Loss before income taxes	(6,935)	(8,914)	(96,414)	(33,515)
Income tax benefit (expense)	1,836	(9)	9,917	(33)
Net loss	$ (5,099)	$ (8,923)	$ (86,497)	$ (33,548)
Net loss attributable per share to common stockholders:
Loss per share - basic (in dollars per share)	$ (0.05)	$ (0.25)	$ (0.93)	$ (0.95)
Loss per share diluted (in dollars per share)	$ (0.08)	$ (0.25)	$ (0.93)	$ (0.95)
Weighted-average shares used in computing net loss attributable per share to common stockholders:
Shares used in computing basic loss per share	96,839,292	35,809,973	92,544,137	35,294,839
Shares used in computing diluted loss per share	97,545,942	35,809,973	92,544,137	35,294,839