Meta

Each server (instance) is its own thing with its own rules and logins, but they all share the data of communities and posts when those are subscribed to by outside instance users, unless one blocks the other (defederated). Think of it like email, different clients sending each other email, and a few might be flagged as spam and not seen. So to your point, you only need to login to one of the places and just subscribe to others outside to see them in your feed.

Okay, I'm learning, but still feel I'm missing something. I understand what you meant about being able to sub to any community on any server. The problem I'm encountering now is that there are a few non-monero communities I'm subbed too, but it doesn't display any of their posts or anything when I go to them through monerotown. If I go to their direct link I no longer have a login...maybe reddit is a necessary simplicity and convenience for smoothbrains like me...