phire is a user on mastodon.xyz. You can follow them or interact with them if you have an account anywhere in the fediverse.
If you don't, you can sign up here.
@benward @tomcoates I don't think there are any differences across servers. I can't post a message that is only for this server I'm on. I don't see the benefits of it, honestly (I must be missing something).
@mathowie There are instances that don't federate with anyone else or only a limited number, so those messages stay "local". E.g., awoo.space only federates with mastodon.social, so I guess it depends on your local admin.
