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.
Microsoft continues to built out its cogitative services API portfolio with two more APIs now generally available. The Bing Custom Search API and v7 of the Bing Search API are both GA and ready for production use. The Customer Search API enables targeted searches, and v7 adds filtering.