So, I'm slightly (more than slightly?) confused.

If I'm here and I'm on mastodon.social, who sees what? Can I merge the streams?

@telemachus no! They're separate identities. You exist within the context of an instance. Your followers don't transfer etc.

So, pick a server and make it 'home', your canonical self. From that context, you can still follow people on any other server by appending their server. @[email protected] and @[email protected] are different.

If you are on a.com, you can just refer to @username to get @[email protected].

Make sense?

@telemachus more advanced implications at the instance level. Here on a.weirder.earth there's a 'local stream' which is all public posts by anyone native to this instance.

'Federated stream', though, is all public posts by anyone on any instance anywhere as long as at least one person from this instance follows them.

So there's a concept of a community, but it's interconnected too.

@mykola That does make some sense, a lot in fact. But I'm not yet seeing how to "follow people...by appending their server". So far, the only way I see to follow is to search and then click the follow icon. But I can't search for people on other instances, right?
@telemachus you can, if you know their instance name. This is complicated by the fact that the UI collapses "@mykola @mastodon.social" into just "@mykola" - but remove the space and that's how you reference someone on another instance.
@telemachus as long as you don't cross them, that will invert all the atoms in our bodies.
@canadalek Noted. That would be bad, correct?