With an estimated 400 million people logging onto Facebook at least once a month, it has become one of the biggest social networking hot spots on the web. But gone are the days when Facebook was strictly for catching up with high school buddies and playing Farmville. Businesses have started targeting specific markets by advertising on Facebook games, virtual products, and applications. As Facebook expands its function and attracts legions of corporations, information provided on user profiles are now more crucial than ever. The future MBA graduate is observing this phenomenon closely, with the goal of learning as much as possible about the tactics being employed by other companies. The following infographic shows just how far Facebook has come and how much revenue it generates as a social marketing experiment.