Revision3 videoblogger Martin Sargent began the closing keynote at Ad:tech — also a live taping of his talk show Internet Superstar — with a video tour through the conference floor. The best part was when Sargent walked over to a booth. "So you're Smiley Media?" he asked. "That's us." Sargent: "What the fuckk are you so happy about?" The Daily Show's Rob Corddry couldn't have done it better. It was a good moment for Web TV, made especially sweet by the fact that hundreds of ad buyers — Revision3's prospective clients, many of them — were looking on from the audience. Too bad that was the keynote's last watchable moment.