Twitter and SL

the twitter api
http://apiwiki.twitter.com/Twitter-API-Documentation

twitter second life connection scripts:
http://ordinalmalaprop.com/twitter/code.html

twitter box failures:
http://ordinalmalaprop.com/engine/2010/09/04/twitterbox-failures

second life tutorial on how to do this properly:
http://wiki.secondlife.com/wiki/Twitter_OAuth_Library

Blender and Unity

Unity is also fun to do!
Combining Unity and Blender:
http://unity3d.com/support/documentation/Manual/HOWTO-ImportObjectBlender.html

importing and editing Blender projects in Unity.
The textures have to be added manually, as told on the page.