Simple things work best when looking for sign ups.

[Hammer]

All of porn is made up of niches. If I wanted to promote the fetish niche and focus on the nylons micro niche, I would build a website to promote nylons and only showing photos of girls wearing nylons on the tour and use a domain name that has the word nylons in it and pack the members area with photos and videos of girls wearing nylons. I don't have to wear nylons to understand how to do that much, but I do agree that there are niches that require an understanding to promote effectively.

Where a webmaster would fail in an attempt to promote a niche, would be to design a site that shows girls in nylons, along with anal sex, lesbians, trannies, asians, teens, MILFs, etc. that are not wearing nylons in an attempt to provide one site that will appeal to everyone. Then, when he puts an ad on Google Adwords about girls in nylons and a surfer that is into that niche clicks and finds a tour that seemingly has nothing to do with nylons but only shows one photo that matches the niche, he's going to leave.