The first link is a clip from when he was on an NBC Special on Video Vigilantes. He has also been on the Maury Povich show and NBC Dateline talking about his cause. http://www.youtube.com/user/videovigilanteokc
is his YT link and his official site is http://www.johntv.com
Brian Bates aka the Video Vigilante is a guy from 33rd and Robinson in OKC which is well known for the availability of hookers (and as you'll see if you watch any of the vids, not the best lookings ones at all) and he set out with his video camera and website to try to dent the prostitution in his neighborhood since 96 on his own.
He basically scouts the spots, sees a girl get picked up, stalks the vehicle, then runs up on them and opens the door to catch them in the act and post it online. He also turns over a copy of the video the Police department and runs the liscense plates of the "John" and tries to tell that person's wife/family/employer.
He doesn't work in conjunction with law enforcement and therefore puts himself in extreme danger as in this video http://www.youtube.com/watch?v=Crh7anZMT5E
when one "assaults" him with a brick. He then "citizen arrests" her.