Here's a small tip that may work nicely for you.
From an picture set which starts with the girl posing alone, and then goes to hardcore, only put the softcore (posing) pictures on the gallery - except for the last picture, which should be something like the girl with a dick or a big dildo in her hand, getting ready to use it.
Add some text saying "Wanna see me taking this big hard cock in my ass? Join now!" or "Click here to see Karen taking this fat dildo all the way up her wet pussy" and link it to the paysite. The last pic, displaying the prelude to hardcore action, is essential here. It tells the surfer there actually *is* more on the site which he isn't seeing now.
Very basic, but it still works. Just make sure that if the surfer joins, he can actually find the set in question, which contains what you promised. Otherwise, chances are it turns into a cb
