I jumped on the twitter bandwagon early, and wrote alot of Twitter-related code shortly after the API was released. I wrote Twitter libraries for .NET, Twitter activities for WF, and I believe I was the first person to ever hook twitter up to a robot (http://www.twitter.com/robotonxt) BUT I was never actually on Twitter myself.
Well, that's now changed, you can now follow me on Twitter at http://www.twitter.com/marcmercuri
