I've found, from personal experience as friends/neighbors/family's unofficial tech support person, that there's a surprising number of women that look at porn. Whereas guys might blush when their viewing habits are exposed, women would probably live the rest of their lives in shame.

Maybe "Find Their Porn" would open up a greater market? Most guys laugh at the prospect of their girlfriends/wives being mad about looking at porn, but they would probably fall into a spiral of insecurity if they found out their significant other was looking at other guys for sexual pleasure.