I was somewhat skeptical of this claim, so I did some googling. TLDR: FB made about 10% of its 2011 revenue, $4270 M, from Facebook Credits, $470 M. Their pro

I was somewhat skeptical of this claim, so I did some googling. TLDR: FB made about 10% of its 2011 revenue, $4270 M, from Facebook Credits, $470 M. Their projected 2012 revenue is $5042 M, of which $811 M is expected to come from 'Facebook Payments and other revenue'. This doesn't say how much of that revenue comes from Zynga specifically, though Sources: http://venturebeat.com/2011/09/20/facebook-revenue-2011/ http://venturebeat.com/2011/09/20/facebook-revenue-2011/ http://www.forbes.com/sites/roberthof/2012/08/30/poof-1-billion-slashed-from-2012-facebook-revenue-forecast/ http://www.forbes.com/sites/roberthof/2012/08/30/poof-1-bill...