"Post Dramatic"?

Oh my.

I would say, trust your gut (and certainly, as CANDC suggests, verify credentials..). That type of careless error doesn't seem to me to be indicative of a deep and abiding concern about what should be important topics to someone in the field (of psychology that is.. not physiology.. oi vey..), topics that should be far more well known to them.

I'd be concerned also, about Facebook as being a good place to discuss such topics, due to their frequently changing the way in which allow individuals to manage various aspects of their own personal information. Something that appears to be private one day they decide will be open information the next, and even if you're reading all their terms and conditions updates it becomes quite complicated managing one's privacy settings in a manner that actually maintains one's privacy. For instance, it used to be that you could choose to have your profile not be searchable to the general public by your name, but they very recently obliterated that capability entirely, tossing the privacy of any who might have been depending on that capability (people with stalkers, etc.) into the wind. I use it very sparingly at this point, only to keep in messaging contact with a few close friends, but even so I find the extra part time job of managing their privacy settings to be an ineffective use of my time, to say the least. With all their photo tagging, and insistence on people using real names and providing phone numbers, I think there's some significant potential for complications there.

In my opinion it's far better and safer to discuss sensitive topics on a site where anonymity is actually encouraged, such as here on PsychCentral. It's quite an extensive and helpful community.