We've been using Wave a bit at work. It's nice that a ping (IM) can turn into a threaded chat can turn into a document. Editing, with change bars, is great. I

We've been using Wave a bit at work. It's nice that a ping (IM) can turn into a threaded chat can turn into a document. Editing, with change bars, is great. It's also great that you can add someone to a wave "late" and they get to see the current state of the wave -- and the history if they care. Much better than forwarding someone an email that has done the rounds. I agree with the person that suggested it is more useful "for work". Think of it more as "Lotus Notes"-lite than email.