Your weekend assignment, should you choose to exercise your brain, is to read Clay Shirky's Rant About Women and then to read the comments (and if the comments are too plentiful, you must at least read this comment).
In short, Shirky asserts that women need to ask for more and promote themselves more aggressively, and essentially to take more risks in doing so. Men get more and go farther because of their ballsy self-aggrandizing, is what he's saying. The comment by Eszter Hargittai balances that out by bringing up how assertive/aggressive women and men are perceived differently by others.
I'm purposely not writing my own reactions here, but I'll share in comments if you have something to say, too.