As an adult webmaster i can tell you that we market tranny niche to straight guys... Any webmaster affiliate program that has their tranny site listed under the "Gay" niche is wrong.
Now that doesnt mean there's not alot of gays or bisexuals who like to fuck shemales, it just means that generally, tranny lovers consider themselves to be straight.
On the other hand, the other night when my GF and I were at the fuck show, her TS friend who was with us (as a spectator) ended up going home for a threesome with 2 Swedish guys she met on the 'gay gogo' bar road. Now correct me if I'm wrong, but we can assume since these guys were 'gay gogo' bar groupies, they were a little gay. I mean, no straight guy would hang out there with his buddies, would they?
The debriefing we got was they fucked bareback all night, did some yaba (like ecstasy meets speed), and they were kind enough to give her $65 for her troubles. Although she's getting over a relationship and would have done it for free, she lucked out and got paid for it even though she wasn't directly out for it.
I love Thailand.