Can you believe that last week's Web 2.0 Summit was the fourth such conference? Its humble beginnings were barely in evidence, as venture capitalists, corporate biz-dev types, and M&A scouts seemed to outnumber the startup founders they were trying to hunt down. Friday afternoon was a return to the old school, however, with Flickr cofounder Stewart Butterfield and LiveJournal founder Brad Fitzpatrick among the presenters. Sadly, John Doerr, the expert inflater of the first dotcom bubble, did not cry. Check the photo gallery for the conference's final, terrifying orgy of schmoozing. Some participants were so exhausted that, by the closing cocktail party, they were making deals with their eyes closed.