I saw the thread concerned, I did see a screen shot from a mobile phone, she claimed she was showing how he was pestering her or something - it showed whatever first name he was using and what I think to be a code word for him plus phone number. Members posted this was all wrong, then the thread was pulled.
Posting info is completely wrong however I'm not entirely sure what went on here, she seemed frightened for some reason that you had her personal details. To me it sounded like boundaries had been blurred, then two people fell out and discretion went out of the window.
There is a common theme here - facebook and it's not uncommon for some punters to ask to contact you or chat using facebook. Bonkers and what's wrong with phone, email or text. There's enough options and no need for anything else, it's dangerous and potentiall damaging.