Moe
The act of selling sex as you suggest might not be against the law, but soliciting for it I believe is. There again I'm not a lawyer, but I do know advertising or soliciting of any sort is against forum rules. So as long a you keep within the rules of the forum (below)your posts to the forum will be accepted.
http://www.birminghamforum.co.uk/index.php?topic=2409.msg69660#msg69660