I've been using Adult Folio for a few years and find it to be a great place to arrange shoots through.
The site is well administered and any issues are dealt with professionally and swiftly.

It's easy to navigate and contact people through, with a good level of security for all users.

Easy to navigate around the site and build your profile, someone always on hand to answer any questions you have, some great Togs on here to help build your portfolio