I think the chaps on the craigs list missed the opportunity. During last years annual gaming pilgramage, our GM had a great and terrible idea.
He sucks at roleplaying women NPCs (who doesn't). So as a surprise, he posted some ads looking for a female player to dress provacatively and play a damsel in distress (who was really a Djinn or sucubus or some such).
One of the players freaked out about the idea before she arrived, so it was canceled on the day of the event. He imagined the GM had hired a hooker and was envisioning cops busting us, etc . "What's the matter officer. We're playing D&D. No really. She rolled an 18. That's a hit. The orc is dead."
It can be done. Starting off with a request for a topless GM though mostly seems stupid.