Living/Want to Live in San Francisco?

Hey, I'm moving to San Francisco sometime this summer, and wanting to do so as cheaply as possible. The ideal would be to load an apartment with as many people as I can find so that the rent's split, say, 10 ways. That would allow minimal need of a paying job and more time to concentrate on things like activism, education and community. This will obviously require friendly, laid back people who don't mind a lack of privacy and who would like to experience the kind of close-knit, interwoven community where you always have someone to talk to/hang out with, and where problems do pop up but they're overcome by talking through it.
I'm moving to San Franciscoto experience it for not more than a year. I'm going to be mostly concentrating on, like I said, activism, education (self), and community. Finding enough people to set this up will be difficult enough, but if it's possible I'd like to find people who are eco and socially conscious and progressive, politically active (politics, in this case, most certainly does not apply solely to governmental politics), vegan/vegetarian, etc. I see the home as a retreat where we can return to refuel on inspiration for our various causes by discussing our thoughts/ideas with whoever's home at the time while eating whatever was picked up at the farmer's market that day, before partaking in the drum circle that starts once most of the people are back and lasts until dawn and eventually all crashing on top of one another in a huge tangle of limbs. I'd also like it if everyone paying rent was cool with allowing people that needed a crash spot for a night/a week/a month to stay with us.
If this sounds like something you're interested in (you obviously don't have to agree to the last detail, living collectivly is about compromise), or you know of something like this that already exists and has space for a new person, I'd appreciate it if you got in contact. The current number's 3, we need at least a few more.
Much Peace and Love
Maddy