not, that I would know anybody there (nor from San Francisco, since I'm german :) but have a look at their website: https://www.noisebridge.net/wiki/Noisebridge the projects they are doing show, that there are at least some people who know, what they're talking about. So if I would live there, I would visit the place for sure. At worst you lose a few hours, but I think you will find a few cool people there