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Federated social media from before it was cool
(lemmy.world)
A community to talk about the Fediverse and all it's related services using ActivityPub (Mastodon, Lemmy, KBin, etc).
If you wanted to get help with moderating your own community then head over to !moderators@lemmy.world!
Learn more at these websites: Join The Fediverse Wiki, Fediverse.info, Wikipedia Page, The Federation Info (Stats), FediDB (Stats), Sub Rehab (Reddit Migration), Search Lemmy
IRC was "kinda" federated. You needed to convince a server already in the network to accept your server. But in the early days requirements were quite low.
BBS was not really federated (except Fidonet I guess).
Usenet, I guess it kinda was. But only ISPs were really running NNTP servers. Only they and unis really had the resources to too.