Chat Roulette: alternative to Online Video Chat
Free Webcam Chat
8 Free Cam Sites: Really Free Adult Webcams
Meet in Chat
All you need is Internet connection and a webcam with microphone.
Another important aspect of the site, which is free, is the section called Fetish, located under Live Girls Cams.
Not all of them.
Do not forget that you can not only communicate via webcam, but also with a microphone and text chat.