FaceBUT, SnapCRAP, etc. I investigated, learned how to use them because others come to me for tech assistance when something goes wrong. I have never created my own accounts, used any of it.
Before the World Wide Web, there was CompuServe. When El Rush-Bo said he also used CompuServe, I knew it was cool.
I had a CompuServe account once. Seems like they had what would now be called chat groups? I think even Free Republic started that way, on CompuServe.
Free Republic started on Compuserve bulletin boards.