Zynga: 10 things you didn't know about the social gaming company

Zynga, most famous for creating FarmVille, the hugely popular Facebook game, didn't exist three years ago and now is reportedly worth $5.5 billion. Having created a host of other successful games, such as Frontier Ville and Mafia Wars, the company has become a major cash generative platform on top of Facebook and claims to be the largest social game network online.