The AT Protocol that powers BlueSky (distributed Twitter) is interesting.
https://steveklabnik.com/writing/how-does-bluesky-work
Especially the ability to use domain names as identifiers and the ability to move between servers while maintaining that identifier.
https://bsky.app/profile/coverfire.com
I’m not sure I have need for micro-blogging any more but perhaps a non-centralized version could be better.