Stay classy, San Francisco

Can a city go, in a year, from geek to chic? Unlikely. But consider this: A year ago, Stirr held its holiday mixer in the Exploratorium, a children's museum full of science exhibits. This year, the place was the Julia Morgan Ballroom in the Merchants' Exchange Building, right on the California Street cable-car line. Last night, as I made my way in, I was thinking to myself, "2007, or 1907?" Alas, the aura of gilded-era chic didn't last much past the elevator ride up to the 15th floor. The first person I met was ubiquitous egoblogger Robert Scoble. Check out our gallery for pictures of actually-not-bad swing dancing — Stirr cofounder Sanford Barr, above, showed off his moves — and people in formal attire playing Wii.

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco

Stay classy, San Francisco