Meta-question for both men and women. If you were a woman considering a career in IT and you were to read the comments on a thread like this, would you be more likely to join, less likely, or unaffected by reading the thread?
(Not that anybody is doing that, it's just an example).
More importantly, I think it's valid for you to have a very binary perspective on tech, either you aren't interested or you're so interested that "To hell with the torpedos, full speed ahead." I know of at least one such woman with the same perspective:
http://raganwald.posterous.com/a-womans-story
Of course, that doesn't mean everyone will have the same reaction. Some might be more inclined to join, perhaps some less. I'm not a woman, and I don't want to be patronizing and try to suggest that there's going to be one overwhelmingly consistent reaction.
I was just trying to point out that our discussions about gender are as much a part of our culture as the culture we're allegedly discussing.