Pssssssst....women avoid internet message boards for a few big reasons:
1. Women aren't particularly interested in sports, crude jokes, politics outside of elections and they typically have far less knowledge about the sorts of subjects that get discussed here and on other forums. Not just sports, but the music that gets discussed by men aged 30-60. And I'll give you $100 to find a woman who can tell us something about WWI.
2. Women don't generally like debating things. Observe the sorts of sites they do like to visit. Observe the conversations they have with each other. There's an almost pathological need to try to avoid hurting anyone's feelings.
3. Finally, women aren't funny. If you can't be at least occasionally funny, you won't get much recognition on most forums.
How's that for a hanging curveball? Hey batter, batter, batter! Ssssswing batter, batter, batter!