On Wednesday (tomorrow!) Six Apart will be hosting an OpenSocial Hackathon at their office in San Francisco to let people get their hands dirty with OpenSocial, Shindig, and Caja. In addition to the Googlers working on OpenSocial, you'll be able to chat with engineers from at least hi5, MySpace, Oracle, Orkut, and Plaxo. The event starts at 4pm PST and will be going deep into the night -- so it's okay if you can't make it right on time. The office is conveniently located near Macworld, not to mention Caltrain, BART, and MUNI.

We'd love it if you could RSVP on Upcoming, though it isn't formally required. Be sure to bring your laptop and perhaps a few friends.

Of course, there will be copious beer and pizza.