Feedback from our members...
I have been a member of AdultFolio from the start. I find I get more work through this site than the others as they allow people to see exactly what you do and not just cover it with the term Adult.
I've done around 200 shoots via AdultFolio and find the site welcoming, easy to use and fully featured. The owners are quick to respond to problems and issues and I'd say the site is great value for money, while being really the only site to cater to this genre - love it here!