Facebook iOS SDK engages users in social applications. With this SDK, users can share messages from an app to Facebook, they can reach a target audience using the right ads, and increase visibility when a consumer is redirected to the AppleApp store. Some examples of applications developed with this SDK include Friend Smash and Swag Shop.
Tangler, an online network of discussion forums, recently announced their new API. The Tangler service takes traditional discussion forums to a new level, by allowing anyone to easily set up a discussion forum that can grow to include hundreds of topics and thousands of users.