* Note: There was a 12% figure that was widely reported a few months ago when Facebook first filed for an initial public offering. But that was Zynga's share of Facebook's revenue for all of 2011 and it excluded advertising bought by other companies that shows up alongside Zynga games. Here's the exact text if you want to read it yourself: In 2011 and the first quarter of 2012, we estimate that up to 19% and 15% of our revenue, respectively, was derived from Payments processing fees from Zynga, direct advertising from Zynga, and revenue from third parties for ads shown on pages generated by Zynga apps.