To quote the organizer:
"GTUG Campout is an annual weekend-long event where Google Technology User Group members have an opportunity to design, develop, and demo a complete application over the course of three days. This year, the theme will be HTML5. The event kicks off on Friday, August 13th, where ideas and teams will come together. Teams will then have the rest of the weekend to build their HTML5 applications before presenting their work to the public on Sunday evening."
The campout is so far scheduled to happen in GTUGs in 11 cities:
I will be in the bay area around that time anyway, so I'm going to join in on the SF Bay meetup. As I've done other hacking weekends and seen Wave is pretty useful for these kind of things, I'm going to put together a Wave-based forum and team wikis for the weekend. If you're participating in the campout, stay tuned for details on those!
Hacking weekends are always a lot of fun, and HTML5 is freaking awesome, so I encourage you to join at the city nearest you, or hey, just reserve that weekend for hacking and join in virtually!