[BjoernKW]

I really like the product idea. The name, not so much. I understand that you'd like the capitalize on the current 50 Shades of Grey hype but that will eventually die down (quite frankly I hope sooner than later because I think the film's success can at least partially be attributed to the same kind of prudishness that caused your problems with Betalist).

Though I have no particular experience in that industry I have a feeling that you can forget about most 'traditional' techy / startupey marketing channels for this kind of product. Techcrunch covered a few sex tech startups in the past though I'm not sure if their attitude has changed since they're owned by AOL.

Twitter could be another option, even porn stars and callgirls / callboys seem to be allowed to market their services there.

Otherwise, you just have to get creative. Try to get local news coverage or hold presentations at tech / design / startup conferences (if applicable).