Senh: Zynga makes up 19% of Facebook's revenue for 2011: “Please disclose that revenue from ads shown to users using Zynga apps on Facebook was approximately 7% of your revenue for 2011,” reads the April 10 letter from SEC Assistant Director Barbara Jacobs to Facebook CFO David Ebersman, “and that this is in addition to the 12% of your 2011 revenue derived from payments processing fees related to Zynga’s sale of virtual goods and direct advertising purchased by Zynga.”