Number 73 is a user on octodon.social. 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.
Another question... when I go to follow someone on another instance sometimes it happens instantly as if they're on the same instance (but they're not) and sometimes you have to do a couples of extra steps (Follow Remotely) indicating your own full identity+instance. Why?
