I was just looking at my neighbourhood forum this evening (not on FB) and it used to be really lively, lots of posts, sometimes quite amusing. It was started in something like 2007 so quite early in the timeline of these things.
Sadly now I think it's about to go to that great Forum in the sky. I can't put my finger on why it has become so deathly dull. Combination of some people posting too much (so it makes you roll your eyes that old so and so is dominating every thread), and I guess WhatsApp and FB groups for those who prefer them. Also a marked lack of interest from the Admin, who I think is a one man band, to doing anything other than the bare minimum with the Forum.
I remember Friends Reuinited and how popular it was and then ... pffft!