The only thing this PPD discussion online has meaningfully done is instill a justified fear in men that their wives will fly off the handle and kill their kids for no reason at some nebulous point after a pregnancy. Women claim this discussion is to "spread awareness," among other aphorisms; well, congrats, morons! We're all aware now.
If you're dating a chick, ask her about Lindsey Clancy. If her answer isn't "that was horrible" or "who's that?", you may want to find another one.