If you're unfamiliar with tranny and cross-dresser sites, then GayLikeGirl would be a great introduction to both niches, because it's the only site that I know of, that rolls the two niches into one.
According to reports, the majority of cross dressers are not gay, but that's somewhat hard to believe, when you see the ones on this site sucking cock and getting fucked hard in the ass at the same time.
The men on the site, if you can call them that, are really women in men's bodies, and they're determined to get free and to enjoy what women enjoy and they do just that.
Dressing up as women is not some bizarre hobby for them, but is a must do thing.
The trannies and cross-dressers on this site probably got made fun of in college. and were called sissies, but the same guys that teased them, now can't wait to wine them and dine them, and revenge is sweet.
To see the change that takes place, when a young man, slowly puts on his makeup, a pretty bra and panties, pantyhose, pretty clothes and then high heels, is really fascinating and these scenes alone show guarantee not just a gay and bisexual audience, but a straight one too.
GayLikeGirl already has tons of great looking pictures and high quality videos, and updates are coming fast, and tour gives a really good idea of what's members are getting.
The price is right about where it should be, or is perhaps a bit low, so go take at the site now.