This picture of all the Web 2.0 Logos on Flickr is really cool! You have to log in to see the big version, but it's worth it. There are some really good ones in there... It's funny though how branding makes you aware - I tend to like the logos I'm familiar with like FeedBurner and Blogger's B, but there's also some other really good ones in there (IMHO) like Rollyo and Rallypoint.
Linked from Qwerky, a new blog tracking the latest wacky dot com names, via Evan. I can't believer there's only 1 (count them) mobile startup that I can see in that set of logos. Soo sad... It'll probably be the only company in the list still around in two years as well. ;-)