Join the Windows Live Messenger team to learn how to integrate Messenger capabilities into your Web site. The Windows Live Messenger Hackathon takes place on May 27, 2009 at Microsoft's offices on 835 Market St in San Francisco. Just bring your codebase for a web app on your laptop so you can work together with the Messenger experts from Windows Live to hack instant messaging into your site! Here's James Senior tells more about the event and provide some examples of things you can build with the Messenger Web Toolkit.
More info: Live Services