Okay, it's time to tell new users a secret about Mastodon.
Mastodon is (whispers) part of a much bigger network 😮
Mastodon servers use an open standard called ActivityPub to talk to each other. That's how you interact with people on other Mastodon servers.
But, dozens of other federated networks also use ActivityPub, so (this is the good bit!) you can follow people on these other networks from your Mastodon account!
Together, Mastodon and these other services form... The Fediverse
(whispers) Click on the link...
Instance de Mastodon, réseau social de micro-blogging libre et décentralisé hébregée par l'association Tetaneutral.net.