Ask HN: apartment finder in SF?

I've been living in the city for 3 years, but my roommate is leaving at the end of August. So for the first time in years, I am beginning the process of finding either a new place or a roommate. I would like to use a service offered by members of the HN community rather than something like craigslist. The reasons for this is that I like to support our community and I tend to like the people that interact on HN. Any suggestions?