The Meetup Node.js SDK by Meetup and collaborator Juan Pablo Kutianski allows to access community features that aim to extend invitations in social media applications. Examples available on GitHub present events, RSVP, groups, and photos. Additional samples at https://github.com/jkutianski/meetup-api/tree/master/examples
Microsoft has announced its new Facebook SDK, which allows developers using Microsoft technologies to quickly create web client (via Silverlight), web server (via ASP.NET) and desktop (via WinForms and WPF) applications that harness the power of the Facebook API.
Well, maybe not forever. But Wednesday's announcement that popular iPhone photo app Hipstamatic can now post their snapshots directly to Instagram's photo sharing network is pretty huge. This marks the first time the Instagram API has allowed a third-party app to add content to its growing social network, clocked at 27 million registered users earlier this month. For developers who couldn't wait for Instagram to publish its API (resourceful hackers reverse-engineered the system back in December, 2010), this could be the beginning of a beautiful friendship.
Facebook added an application settings dashboard to give users a way to see what information is available to apps. The move makes very clear what was previously murky. The result should be users who are more likely to trust your applications, because it's harder for others to get away with tricking them into permission.