aviary, fly me into your beta, please

Just stumbled onto Aviary, a collection of online tools for content creation. Basically, the art equivalent of Google Docs. Since I'm not in their beta yet, I have no idea how good they are, but I love this idea. Web as platform -- the more I play with it -- seems like such a smart direction. I wonder if they are using AIR for working offline? Would seem to be a shame if they weren't.

The real question is whether they are really allowing online collaboration. Google Docs lets you share documents and track changes online, but it doesn't allow collaboration in the Second Life sense of simultaneous collaboration. If Aviary's tools allowed wiki-like collaborative editing, diffing, and rollback, it could be an incredible tool for prototyping and brainstorming, as well as tools for art production.