I wish OpenSocial was more open!. Just an Orkut Sandbox to play with and that’s invite only. I wonder why Google announced this right now. Just a set of API docs and a video to introduce things feels so Microsofty. At least Silverlight has a working runtime. How am I supposed to test OpenSocial apps today?
OpenSocial
Having said this, I got into the Orkut Sandbox pretty quickly (less than a day wait) so it’s probably okay!
Take a look at my posts on developing a Silverlight application for OpenSocial: http://blogs.msdn.com/synergist/archive/tags/OpenSocial/default.aspx