I'm pretty much exclusively attracted to women, but from 2002 to 2013 I cammed for plenty of men who claimed to be straight but who were curious about seeing a really big dick. Cammed for plenty of gay and bi men, as well. Personally I did it for money and attention and wasn't interested in watching anyone else. I've cammed for plenty of women, as well. And plenty of men pretending to be women. Not many women pretending to be men, so far as I'm aware. But I'm retired from that sort of stuff now--I've gotten a little too long in the tooth and the market's glutted. I enjoyed it at the time, though, and never had a bad experience.
But for anyone wanting to cam I'd think the video chat room here would probably provide ample opportunities to explore that sort of thing