[Alluvial]

Wasn't ICQ just person-to-person though? In the wave, all the participants could be typing at once.

What I think is the best thing about it is that all the communication is contained in one place. I do a lot of emailing back and forth with clients and other engineers as a project is progressing. Sometimes it's difficult to find that one email which has a certain piece of information in it; especially in expert witness projects because they seem to drag out over years. By communicating in a wave, all of that is in one place; and each of the participants can refer back to it.