The campaign against craigs list (and now backpage) is based on the allegation that those sections were being used to advertise child prostitution. They try to present it as if all or most prostitution involves minors, which is clearly absurd. While I don't doubt that the odd minor slips in here and there, the vast majority of the adds understate age, not overstate it. I don't think I have ever seen a craigslist/backpage add that looked like it involved a minor. IMO if there were any, the police would be all over it in a nanosecond.
Thats the wierd thing if you watch CNN and Anderson Cooper, you would think this was all about kids if you listened to them, but it doesnt seem like any of the people on those shows have actually looked at the adds, because then it would be obvious that they talking out of their asses.