Thanks to Dan of Neurointerests for linking to my article on Digg. (Even more, for teaching me how to make the Digg This button work!)
That post explains Michael Odent's theories about how C-sections may interfere with the bonding process between mother and child at a crucial time. Moreover, because the infant brain must learn the oxytocin response, cesarian births also may deprive the baby of a jumpstart in bonding.
If you think it's important, please go back to it and hit that Digg button.