Weighing in on the topic at hand, I think a link redirecting to a separate section of gay 3D porn is the best option.
Now, the obligatory soapbox section…
I think it's the best option, but not a good option. We, the consumers of pornographic material, would like to believe ourselves to be less close-minded and bigoted than, say, the average person, but we're not. One would think with our appetites for "alternative" forms of sexual imagery (i.e. futa, tentacles, alines, etc.) we'd be understanding of other "alternatives", especially ones closer to the mainstream like male on male, but we're not. We're human, so we like what turns us on, we like the people turned on by the same things, and to hell (sometimes, we hope, literally) with the people who like anything else we don't. So it's not a good option because it confirms the fact that we're all as lame as we think everyone else is, but it's the best option because you still have to attract people to the site to spend money.
The only thing I'm 100% sure of is that no matter where you put the male on male material, I'll still be here to consume all the nasty things that turn me on and support the BEST porn site I've ever spent money at.