...and, to go on a bit of a tangent, how the internet "used to" work. You still see the remnant with E-Mails; they can go between servers. Most other services have become locked and centralized now. There was a short bit of time where MSN, AIM and YIM were practically compatible with one another due to sharing many of the same XMPP protos.
Personally I am happy to see this again, been too long ^^
As someone on Kbin I often find myself commenting to people looking for certain magazines only to realize after replying they are on an instance of lemmy. But they can still look at the magazines like I can look at their communities. I find all that very fascinating and new.