Malcolm McMahon, a student at City College in San Francisco, had his bike stolen. He was upset enough about it to talk to police about a bait bike program run and financed by a volunteer posse.
More --> Bike vigilantes: Victims strike back.
It doesn't look like McMahon's "Concerned Cyclists Community Program" has gotten anywhere yet and his original Craigslist posting asking for volunteers has expired.
I don't go up into San Francisco often, but when I do I see literally dozens of bicycles locked very poorly. It's unfortunate that the newbies who don't read bike blogs are the ones who often get burned.