The best thing to do op is to follow treats on those advert and see if people are making it or not. Though alot of scammers exists but from this forum is very easy to identify them by following and reading comment on those money making services.
I think it's very foolish and naive to think that someone can not track someone. You correctly said about the information that the user himself is debating about himself. It is already only possible to link several chains to find or identify someone.