Best Web2.0 site about Web2.0

I love to troll thru this list of Web2.0 sites at Go2Web20.net. The domain name is uninspired, but the site lists everything 2.0, much better then a Google search. Its nicely focused, sortable, and includes a brief writeup of what each site offers. Just the short description is worthwile. Its surprisingly hard to find that out, even on many of the sites themselves. No editorials, I can make up my own mind. I sift thru this one to do product idea research, to find specific stuff, or just to waste time that looks productive