I agree with Chief that sniper's comment was over the line. Everyone deserves to be judged on the quality of what they post, not by their age, race, sex, or other such characteristic. Too often, people start hurling insults because they are frustrated at being unable to make an articulate response. Saying someone's arguments are weaker or less valid because of the sex of the poster is completely bogus, as well as insulting and demeaning.
Anyone who choses to disagree on a point, should be prepared to argue the case on its own merits, or just shut the hell up refrain from entering the discussion.