At the recent Google I/O conference in San Francisco the next big Google project was announced, Google Wave. Imagine being able to instant message and collaborate with multiple people in real time. Now chat rooms have been around for a while real time collaboration is a new concept. Wave is so much more than an IRC chatroom; Wave allows users to include rich media in the conversations as well as adding people on the fly. You can add users to the “Wave” at anytime. New users added to a Wave can then “Replay” the Wave to see what they missed. A Wave is built using a tree structure which allows for the replay.
Imagine having a blog + chatroom + flickr all with collaborative “wiki” abilities. I’ll be the first to admit it is difficult to wrap your head around.
Definitely check out the developer preview video here.