TwiTalker is a powerful twitter robot based on Google Talk developed by Kavin. You can send tweets and receive friends' updates directly in Gtalk without login in your Twitter.
Retrieve mentioned tweets
Get your own twitalker and you can setup a bot which is able to hold 250 users,including a live site for binding account.Check out the SetupGuide to install it yourself.
=June 28,2010 Update to version 2.0.2=
Aug 24,2010 Update to version 2.0.3