I get my rocks off at
Bi Bucks.
They run Three Pillows the oldest mmf bisite on the net. It is a huge site with tons of orignal content (unlike so many others with the same tired content). They also offer the wankers much more than pics and vids. They have bi-personals, bi-audio stories, bi-chat, bi-artwork, bi-comics, bi-stories. Just look around at the site they have it all.
Best of all they convert well on curious straight traffic.