I've been on AdultFolio almost two years and it's been a great site to find photographers and models to work with. The site is very easy to use, and you can 'link' different accounts together - e.g. if you have separate photographer and a model accounts, you don' t need to keep logging in and out to use each different profile. The upgrade system is also very easy to understand - two one-off payment options, and a monthly membership option (this one gives total control of your profile).

Really well ran site.
References always helpful.
Lovely people.
Great experience.