Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Revenue		$ 537,134	$ 386,976
Cost and expenses:
Cost of revenue	[1]	135,632	97,937
Developer exchange fees		147,122	118,938
Infrastructure and trust & safety		141,355	94,136
Research and development		177,762	96,644
General and administrative		57,772	94,375
Sales and marketing		29,102	20,002
Total cost and expenses		688,745	522,032
Loss from operations		(151,611)	(135,056)
Interest income		245	5
Interest expense		(9,999)	0
Other income/(expense), net		(379)	(1,050)
Loss before income taxes		(161,744)	(136,101)
Provision for/(benefit from) income taxes		276	2
Consolidated net loss		(162,020)	(136,103)
Net loss attributable to the noncontrolling interest		(1,818)	(1,886)
Net loss attributable to common stockholders		$ (160,202)	$ (134,217)
Net loss per share attributable to common stockholders, basic (in dollars per share)		$ (0.27)	$ (0.46)
Net loss per share attributable to common stockholders, diluted (in dollars per share)		$ (0.27)	$ (0.46)
Weighted-average shares used in computing net loss per share attributable to common stockholders—basic (in shares)		588,521	291,074
Weighted-average shares used in computing net loss per share attributable to common stockholders—diluted (in shares)		588,521	291,074

[1] Depreciation of servers and infrastructure equipment included in infrastructure and trust & safety.