JGE Automatic Content Generator is a PHP script that will automatically add relevant content to existing web pages. Uses Calais to perform semantic analysis of an existing page's content to find essential keywords and then pull content relevant to these keywords from Freebase.
Gowalla, the location aware social networking service, has announced the release of their first public API (our Gowalla API profile). This will help them keep up with other location-centric social services like Foursquare's new API.
The red hot startup of late, Pinterest, certainly has a friend in Facebook. Users of the pinning site can sign in with an account from the dominant social network. In a new post, Facebook suggests it's Pinterest's inclusion in Facebook Timeline that is driving its growth.