I'm all for catching predators.
After seeing the US show "To catch a predator" I'd have to say that they used some incredibly sketchy methods to lure their creeps. Of those some of which were mentally ill (obviously.) Makes me wonder about those who we did not see on TV.
Likewise, honestly how many kids 17 or under are advertising for sex or such on CL? If I remember back, even considering a girl one grade younger was a big deal among your class mates, never mind advertising for it.
It sounds suspiciously like they are "creating" a market, where none existed before.
Add to that, CL itself. I am even reluctant to sell my used appliances there now. You have the typical CL cheapskates and time wasters, and now you have this whole seedy thing happening only a couple categories over.
The creep catchers themselves are not under any obligation to follow any code of conduct, either.
I think it has a lot of potential to go south fast, and potentially ruin someone's life, if the CC's methods become overzealous, or a mistake is made.
I'm not a fan of the US show, and not a fan of this. If they make a mistake, the person's picture is on facebook or wherever right away.
Once it's in the media, you are guilty period.