Zynga, founded in 2007, is the largest social-network game developer with over $1.5 billion in cumulative bookings, targeting a revenue of over $2 billion by 2012. The company primarily generates revenue through in-game sales and advertising, and has a strong relationship with Facebook, which includes exclusivity agreements and collaborative growth targets. As of September 2011, Zynga boasts 232 million monthly active users and plans to continue expanding its game offerings and mobile presence.