Google Wave

As soon as I saw like 18 minutes of the Google Wave preview video (http://wave.google.com), I was stunned and at the same time asking myself, howcome this didn’t exist earlier, because it’s a simple concept although it’s a revolution in the web communication/collaboration “market”.
The video it’s definitely worth the view, and my guess is that this will overcome email and all the current social/collaboration tools/sites, because the nailed it right on the spot!
Congrats to Google!