BlogExplosion.com has been sold to Stephen Sartain and a group of private investors for a six figure amount. The deal was brokered by Jeremy Wright.
http://www.bloggersblog.com/cgi-bin/bloggersblog.pl?bblog=424062
This is the biggest validation of Web 2.0 that I know of. For those that knew of BlogExplosion it was a hit trading exchange. Basically, you read other peoples blogs and in return you get an equivalent amount of reads on your blogs from other people as desperate as you. I tried it out for a few days sometime last year. I realized, the only people that would use it are those that write the worst content and are completely desperate for traffic. If that sold for 6 figures, then we are definitely in a bubble of sorts.