Those are the three areas everyone continues to target regarding Sarah Palin: her pregnancy, children and motherhood. Thinking about the Vanity Fair piece again, I can't help but notice this is just another link in the very, very long chain of attacking Palin at her most vulnerable point - being a mother and everything surrounding that. There is no more personal attack than attacking someone's children, or a woman's birth experience, or their parenting style.
As her career continues no matter what she decides to do, we can expect more and more of these types of attacks. David Letterman's joke and the McCain staff spreading lies are only the tip of the iceberg of what they will do to her as the months go on.