Adultfolio is an adult content site that enables photographers/videographers to book models. Both can express their talents without the concern of photo/video censorship. There are Work Levels for everyone's taste.

AF is a great resource for any photographer who shoots adult style images. The models already know what is the minimum type of levels they'll need to shoot to.
It's also great for getting ideas and seeing inspiring images, so discussions are easier.
I met my 2 favourite models on here and we've shot some great images together.
All the best, Dean.