haha, showing your age, rich!
I didn't knwo what it exactly was until recently either (forced to join on a yaer or 2 ago).. it's just a forum, really... bit fancier, has A/V capabilities etc.. bunch of bells and whistles for millenials
something to star at on their phones while ignore people in RL. (last comment not jsut millenials, obviously)
greatest thing i've done is get rid of my cellphone... never joined soc media, so that snip was easy, too
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not discouraging you... knock it out... ignore my bah humbugs. more theatrical than true "bahs"