@pessimism It's a little complicated, but basically, when you make a post on a Mastodon or Gnu Social instance, it'll get sent out to other instances, or "federated", and users on one instance can communicate with users on other instances without the need to register on those instances (though exceptions apply, like then an domain is blocked by an admin).
@TrollDecker Awesome, I think I grok it now, cheers.
So you register on other (local) instances, but you can see all toots across—and interact cross-instance—via the federated timeline?
Actual account at pessimism@mastodon.social.