Facebook last night unveiled a new developer platform that enables third-parties to create applications within Facebook. These applications can be added to a user’s account and interact with the network to add new functionality to the dashboard, newsfeed, and profiles. This enables a whole new approach to Facebook for companies. No longer are they constrained to a simple group or profile. Companies can now create immersive experiences built right into Facebook and using more information than the Facebook API allowed access to. Facebook Platform is launching with numerous partners, among them are Microsoft and Amazon. Amazon is said to be working on a Facebook application that will let users review books and then buy them on Amazon.