Facebook has an email platform / inbox metaphor thing. I bet (i.e. I have no idea what I'm talking about) that he's probably still interested in new forms of collaboration. Maybe under the guise of a Facebook tweak we'll see some Wave concepts reappear. I did always wonder if Wave would be some sort of gmail labs bolt on, and perhaps Facebook is keen on that for their platform...

It's interesting to think about Facebook cross-fertilizing with Wave but man, hard to believe it would lead to a decent UX.

> It'll be hard to top Google Wave.

How do you mean that ?

it's hard to come up with another example of something as ambitious, launched with such huge hype (remember the entire developers conference leaping to their feet and applauding) with such atrocious quality and usability. not at all clear what to do for an encore :-)

Possibly, if staying in relatively the same area, improving Facebook chat, which is tending to be the default chat people use these days but is lagging behind alternatives. It's only got so big because your friends are already on it and people are already on Facebook.