John Battelle's Searchblog: Adsense Update: Fred, $500, and Is Google Trying Harder?: "Adsense Update: Fred, $500, and Is Google Trying Harder?"
Fred Wilson's article on numbers for Google running Ads on his Blog. I think it's good numbers are getting out of there; it seems a little ridiculous for Google to be keeping advertisers from disclosing revenue. I think more people are going to start anonymously posting results.