in my experience, more girls like hetero porn than gay porn. Gay porn certainly does not appeal to most women, but slash fanfics and of course yaoi are a different matter. You have to understand that slash/yaoi have all of the things that appeal to women, such as romance, softcore, etc., while gay porn is hardcore man on man action targeted to gay men. For the most part it's too explicit for women, and there isn't much of a plot.