Kink.com is the network site for all of Kink's fetish porn sites, which exist as channels contained on the main site. Kink are the masters of fetish porn and have been doing this for years. This is not just a porn site, it's a phenomenon covering BDSM, femdom, bondage, submission and public humiliation. Filming the fetish porn at Kink's studio is taken very seriously and it is even possible to become an audience member and watch the films being made.
Kink.com covers a good mix of straight and gay fetish, with some transexual porn thrown in too. There are also live cams and an archive section showing all Kink's older stuff. All the material is pretty intense, nothing is done by halves here. If it's bondage you're into, there are no less than four different straight sites that cater to that, and four gay ones. If it's public sex you're after there's Public Disgrace for female public humiliation, and Bound In Public for the gay version. There is also slave training and Kink University, dedicated to instruction in the art of fetish sex.
With over 10,000 HD videos Kink.com has to be the first place to go if you're at all interested in fetish porn of whatever flavor.