Customizing the Facebook iOS SDK FBFriendPickerViewController; Adding a Search Bar
As Facebook integration into iOS comes along, it feels like all applications must integrate social features. Having the ability to review your Facebook friends list within your app is one of the most important social features. Sharing the app or posts from within the app with friends is one of the best ways to virally spread the product among several people.
One of my recent projects required upgrading the Facebook SDK to the latest version, 3.1. It was using Version 2.0.