Wow!
Go check out Google Wave. It will change how we think of email, chatting, twitter, facebook, wikis, forums, boards etc etc. A new communication pathway...a tidal wave of change is coming.............
It is open source! It is amazing! http://wave.google.com
Already Tons of articles and commentary
Excellent details on what a wave, blip, extension, playback, robots are in the world of Wave is located at http://mashable.com/2009/05/28/google-wave-guide/