Think about it. How many guys' real faces have you seen?
OCSMs not included, I've seen what practically every female member looks like (with the exception of The Mother Goddess, The Milkman and perhaps one or two others)
Maybe it's because a board spectrum of men are on the board, but the small percentage of women that join the board have aspects about their personality that are similar where they are willing to do that.
At most other boards I find both a number of men to women that is closer to equal and the number of men and women that will show a picture of themselves to be about equal.