(And here I go into down-vote territory... :D)
Before I say anything, let me say clearly I am not sexist; I am a strong advocate of equal rights (key word: equal).
Some of your attacks can definitely be attributed to sex, but it's bad propaganda just to throw them all in the sexism bucket, or treat sexism like it is the norm. I know several females in the industry who are not afraid of anything, and have never been attacked on the basis of their sex (or even been attacked otherwise). Sometimes people attack just because they don't like the cut of your jib. In other words, it can be tempting to project your experiences on the rest of the industry, but I think as a whole the majority of men are "good guys".
The simple truth is the more you open yourself to the public, the more you open yourself for attack, regardless of sex. You have almost 30,000 followers, so statistically speaking at least a few of them are probably psychopaths and/or sexist. Some of the highest profile tweeters, like Notch, get attacks daily (mostly by angry 13 year olds). My $0.02...