Yeah, Facebook is well known for its Orwellian surveillance and political
nature. Frankly, I'm shocked at how many folks from this group in
particular are OK with that. Still, I didn't know about some of the stuff
listed there.
Anyway, it's definitely not for me.
groups.io does seem like the best alternative. We've got several
medium-sized (100-200+) Yahoo groups that we'll probably end up converting
to groups.io if Yahoo does indeed go away. Those groups are also mostly
(either entirely or almost entirely) about email, but having the ability to
store some shared files is helpful.
Michael
N6MEF