So far my neighborhood is pretty quiet. About 50-odd users. It's entertaining, though. There's this one guy who posts weird survivalist rants and doomsday scenarios about The Big One, and how we're not sufficiently prepared for it. (Probably true, I hate to say.) There's a woman breeding puppies in her apartment and offering them for sale. There's a guy using the site to promote his political blog. There's a guy playing True Detective, tracking all of the car break-ins in the neighborhood, and looking for a "pattern" and "the perp's signature" in the items left on the scenes. I kind of dig it all. Seeing the eccentricity on display adds a smidgeon of big-city atmosphere that I've always felt SF was lacking in comparison to other cities I've lived in.
I hope the network comes into its own, and that we get more people in my neighborhood on board. In the meantime, I'm enjoying the strangeness of my early adopter cohort.