PublicNudeSluts has a pretty simple concept that so few sites actually use particularly well - that of some VERY hot girls getting naked in public and getting up to just about anything. It uses the concept superbly.

PublicNudeSluts is a site where the girls are determined to go out in public wearing next to nothing - rain or shine! This is an exhibitionists' paradise, where the girls strip off to the delight of passers by.