I have talked with some team worker about making a porn website with only referal link... For the xxx content, it's not the problem. But after, if I want to get traffic, do the method are the same than "normal" website ? It's not the kind of site I would like to make exchange with my serious website....
Go for a wordpress adult website. It's easy to build, there are at least 50 good looking free wordpress adult themes around, and you can easily sell the blog on gfy for $150-300. For promotion, I would stay away from all the "normal" places where you promote a white hat/mainstream site. There are several adult directories that accept any new adult site but google doesn't seem to give them much credit. The best way to promote an adult site, on my opinion and from my experience, is by using the http://linkex.dk/ system. You can find enough people that will link to your site even if it's pr 0 and everything is done in a safe way (no actual link exchange, it's more like a b c linking). If you like, we can talk more about it on yahoo, msn or whatever you're using.
In my first step, 7 years ago, I remember that I made only 1 page on my "warez" site, it's the only way that I used to generate traffic on that. But for this domain, I know that Google will not help me, there is too much competition. But I can talk anytime with you, i will contact you. Thanks for the help