Almost all major sponsors have varying live banners and yes, most have "hot girls" too ... but you'll be surprised to know that many of those hotties are European and yes, most are in studios.
There are a few sites with a larger percentage of North American ladies, ifriends is an example, but even there by far most are European.
Now if you're assuming that American men only want to chat with American women, to a degree that's true - the busty blondes always get a lot of attention - but what you'll find is that once these same customers get a "taste" of European women, many never go back.
Anyhow, click below for about the most complete webcam sponsors list you'll find anywhere:
