I've got a beta account to Quora - and found the interface, client side tech to be pretty powerful for collaborative knowledge building. More structure than a w

I've got a beta account to Quora - and found the interface, client side tech to be pretty powerful for collaborative knowledge building. More structure than a wiki, or mailing list, but flexible way to build knowledge. I agree with the review impressions "Quora is a little like Aardvark, the social Q&A service founded by ex-Googlers and rumored to be in Google's acquisition sites, and it's a little like Stack Overflow, the carefully crafted Q&A site for programmers that's shot through the roof with reader interest. It's definitely different though."