Ad:tech San Francisco is on and I'm disappointed. AdWeek's Brian Morrissey promised me Ad:tech would be full of "random, sketchy lead gen ad networks who hire booth babes." Instead, I'm stuck in a session with panelists explaining how Google could better sell search advertising for offline brand advertising campaigns, which sounds boringly profitable. And I've encountered precious little sleaziness yet. Except for one guy and his two friends from Blow4Free.com. And the 13 others I met, in photographs below. A warning: The last two pics are probably too hot for your office manager to handle.