The Klout Objective-C SDK by Camille Kander connects with the API to integrate analytics features that allow to measure business reputation. Based on sentiment analysis, developers can help users to have a voice when creating content for a specific website. HTTP and JSON formats are available for API interaction.
For the past few months, the API of microblog site Twitter has been used as the basis for many popular and creative mashups. Now Facebook, with the launch of its highly anticipated Open Stream API, is attempting to gain some attention as a platform for social networking applications.