Live Jasmine - Huge web site that became brend for live erotic and hardcore web cam shows over the internet in last few years. Lots of performers of all ages, fetishes and sexual preferences, both free and private-only at any time of the day.
Just Note: Most of the best looking and most popular performers are not doing free shows but only private-ones.
I'm Live - Another awesome web site with thousands of registered erotic web cams performers. Just like live jasmine, I'm Live offers huge variety of performers, both male and female, straight, gay/lesbian, bisexual, transsexual, aged from teens and coeds to matures and grannies, of all fetishes from toys, and sexy lingerie to spanking and bondage.

Any of these two porn web cams "arenas" will satisfy even the most demanding users, that's for sure.