You know I was always curious about something, since this is the "net" and the vast majority of people in fandoms do not meet in person, is Fic writing truly a female dominated thing? Or do people just lie about gender, age and other things. Unless you're a major hacker, I'm not sure that's something that can be quantified.....
Well, when you consider that fanfic got its starts waaaaaaaay before "the 'net" in the form of newsletters and fanzines that were sent around via snail mail, often with their origins in local fan clubs...and that there are media cons devoted to fanfic and fan art of all fandoms where people do meet face to face...I think I can confidently say that yes, it seems pretty well female dominated.
This is not to say that there aren't men in all fandoms who do it. It's female *dominated*. And I did point out that Enterprise/TnT is an *anomaly* due to the presence of so many men.