The VerticalResponse Ruby Sample Code by VerticalResponse is available for download on the sample code site. Developers will be able to send an email marketing campaign after following the instructions available on the file.
Stack Overflow, the innovative and popular programming question and answer service, is planning to open an API. In keeping with their community-centric approach, they are asking developers for input on what features should be included in their API.
App.net, Dalton Caldwell’s proposed ad-free Twitter-alternative, has launched an experimental Developer Incentive Program to financially reward developers that create innovative and popular applications using the App.net API.
Popular social check-in service Foursquare is going through some changes, and the most important of those is that the old v1 API is going dead, as we've known since March. Older apps, especially abandoned ones, will stop working then, as will any newer app that hasn't yet upgraded to the new API.