One of the things we have to realise when marketing porn. Is that the buyers are mainly the same people, there's a deluge of free porn, there's a deluge of paid porn, we've been doing this for over 15 years on the Internet, the buyers are wise, knowledgeable and been around for years.
We're marketing a continuously bought product by the same people. Like office stationery, not a rare buy like a chair or desk. For most.
Not a perfect example but the closest I can think of for now.
The marketing is different.
Today if someone wants to jerk off to any porn what ever the niche, except micro ones, the consumer is spoiled for choice of free porn. We have to think differently and realise he needs more than he did to entice him to sign up in 2010 than he did in 2000. Or even 2009.
He needs porn that will hook right into his fantasies. Speak to his imagination in such a way that he wants a lot more. And keep it off free sites. Robbie's site of Claude Marie is a good example of that.
Selling good porn isn't tough. Selling bad porn is. Creating good porn is tough. Creating bad porn isn't.
With a forum you will end up with mostly readers and chatters. When they visit the site and see the same old content available for free on Tubes most will go to Tubes to jerk off.