I don't do Facebook.
I did create an account once upon a time (a long time ago), but I've never been back since and wouldn't even be able to remember how to sign-in anymore or what my password is, anyway, so Facebook doesn't even exist as far as I am concerned.
I received a personal message about a Facebook link in this group (I've received more than one of those PM's over the past few months from various members), but I cannot even see a Facebook link anywhere on the group.
The only think I can think of is that perhaps my proxy server is blocking the link from downloading (the proxy server also blocks ALL advertisments from downloading with this group and ALL other websites).
lol, I don't need to use proxomitron. The button is at the bottom of the first post in each thread FYI see attached screenshot