For the record, prostitution isn't illegal, however soliciting one is. Also posting personal addresss of someone isn't cool either. Loosing that money is the cost of doing business, deal with it. In all seriousness, who's side is the law really on? It's not the OP that's for sure. It could cause great harm, and borders on harassment. I don't know the op or the person in question, but outing someone isn't the right solution. Letting other ppl know via online review is the way to go.