When I lived in San Francisco this group of Danish students sent an email to the food to bombs list serv asking about finding collectives to stay at, they bounced around for like 2 weeks, amd helped with food not bombs and other projects. So email in advance and help,out while you are there.


I think the city itself and a lot of the surrounding sites are really interesting as well. Although I got the distinct feeling that a lot of people who live there, or at least a lot of the ones who serve tourists, kind of hate foreigners, LOL. I guess I'd probably be the same way if I had to deal with tourists all the time.
