I think imdb members. But I can be wrong. Who out there would rather watch "you've got mail" than "The Avengers?" My mom.
Not my Mom (we actually just watched the Avengers). (It's not a voted list... it's literally someone posting what they think)
Here's part of the reality: people are socially influenced to like particular things (and to not like other things). Ever see a woman get made fun of because they liked video games? I have. By boys and girls. Do you think that that will affect what they do and do not like going forward? I sure do.
A male nurse? LOLOLOL. Where I grew up people casually used the term "gay" to mean "stupid." I think it's incorrect to assume that that doesn't help reinforce one's perception of the word, and all that it entails.
When we say "Women are the ones that like twilight" we're making social statements that girls are the ones supposed to like Twilight. And only the girls (I have issues with Twilight for other reasons... and so do a lot of women actually).
But to use words like "the majority" is interesting. My Mom hates twilight (it's stupid to her). I have some women friends that really like it, but because it's so silly and absurd. I PVR'd the first one to watch it one time (since I hadn't seen any of them), and my roommates deleted it because it was obviously recorded accidentally.
It works the other way too. I think there's much more concern in big budget entertainment that "if we market to women, men won't come" while "if we market to men, the women will still come." Which is unfortunate (and damned if I know how to fix it). So you get chicken and egg problems I find.