I'm of two minds as regards BB porn. Most of the stuff coming out of the US and Germany features performers who are obviously HIV+; they're older and show distinct lipoatrophy in their faces and bodies. I've always been a vocal supporter of BB serosorting (poz/poz, HIV- guys cannot serosort successfully IMO), whether in porn or IRL. The double B in my screen name is not a typo.
But there's a lot of product coming from the former Soviet Bloc that is obviously different. I've heard (though not seen) that even the long-time condom-only company Bel Ami is releasing BB porn now, and there's a ton of stuff coming from Russia that I don't watch because it just seems so exploitative. Besides, twink porn does nothing for me.
There's also a lot of porn being filmed in Mexico and Brazil that is condom-free. Though the stuff coming from Brazil is mixed in terms of the desirability of the performers (with some extremely attractive guys mixed up with those who are much less so), I've yet to see anything from Mexico that didn't look like exploitative twink crap. And regardless of the desirability of the participants, I feel that nearly all of this porn will most likely result in many new infections in places where health care is less than ideal.
MachoFucker clips, which are filmed all over now, give me the same sense of unease when I think about it.