When I had a facebook account I joined this group. My personal experience was that I found a lot of the posts were from former/current Linux users who were trying to bring their "Linuxisms" over to FreeBSD and dismissed advice to the contrary. Not necessarily bad, but when I interjected the "FreeBSD way" of doing things, I got hammered with a bunch of negative responses.
I ended up leaving the group and eventually facebook, although the latter was for other reasons...