Brain damage from mass quantities of cocaine and vodka probably have similar affects on cognitive functionality to downs syndrome. I'm ignoring their faces anyway, because if you focus on their faces, you realize they're not any more attractive than your average skank at the corner bar. Perhaps Cytherea is a bit, um, "classier"?
Porn stars look slutty, which is hot in depraved sex videos, but I wouldn't bother to actually hunt down a porn star like that. If I was going to bother to search for a specific one, I'd want her to look all natural and sweet. Then it would be depressing to watch her get reamed by retards though.