@nonlinear your last few boosts are near and dear to me - I was worried about several amateur radio lists with the shutdown of Yahoo groups but most seem to have moved to groups.io. I don't want Slack or Discord anywhere near information that matters
@jboverf Agreed. Even with most groups moving to groups.io, there are some groups that are abandoned, or the owner can't afford the transfer costs (groups.io increased the cost to $200 for automatic transfer), or otherwise won't move. Those groups will be gone in time.
And then this will be repeated in a decade when groups.io is bought, neglected and eventually shutdown.
I appreciate @freakazoid 's point that web forums were the beginning of information destruction, and the whole Yahoo Groups fiasco is the latest example.