Well, put both sides in a sack and hit it, you'll always get the right one ...
Sorry, but how stupid do you have to be to run a forum with false contact information? OK, how stupid do the hosts have to be to go along with something like that? You should really do some verification of the authenticity of data if you want to do serious business - just as customers should also provide correct information. But something like that should actually be clarified beforehand and you shouldn't even start operations if the contacts aren't clear.
At heise online news there's the original article.