Social movie review web site FilmCrave recently released a new API (our FilmCrave API Profile) that provides developers with access to various types of content, including member movie reviews, movie plots, and movie ratings. Originally developed as an API for use by one of its business partners, FilmCrave decided to make the API publicly available in order to encourage third parties to integrate FilmCrave's content with other web sites.
Have you noticed the many tools to share your location? There's FourSquare and Gowalla, both about a year old. Then there are old-timers like Brightkite. And now, there's one that works with all three (and a couple more).
Facebook is starting to approve additional "actions," verbs that let users go beyond Like. Developers can use Facebook timeline actions via the Facebook Graph API, but only if approved by the social network. Social shopping platform AddShoppers received approval for "want" and "own" and even has some Like-like buttons for those actions.