Yeah, there's been a lot of hype about all this "Web 2.0" malarkey. Yeah, most of us are sick of it. But when stuff like Fold shows up, it makes me sit back and say "Hey, self...there may actually be something to all of this." See for yourself at this very slick attempt at creating a Web based "desktop" that might actually be useful.

ps. If you're looking for the ultimate list of Web2.0 stuff, check out Sacred Cow Dung's All Things Web 2.0 list.