The thing about rss (and atom) is it sucks but it's the standard. The fact that it's already widely used and implemented is the main reason it's good.
IRC on the other hand just sucks, not only does no one use it any more but it's also unencrypted. You should probably be using xmpp or matrix rather than irc.
But let's not let this get us down, I think everyone can agree that bittorrent is a good protocol for example. Finger is kind of a fun one.
Then the obvious, gopher and gemini, although I feel like that's it's own can of worms that maybe needs a separate thread.
IRC on the other hand just sucks, not only does no one use it any more but it's also unencrypted. You should probably be using xmpp or matrix rather than irc.
But let's not let this get us down, I think everyone can agree that bittorrent is a good protocol for example. Finger is kind of a fun one.
Then the obvious, gopher and gemini, although I feel like that's it's own can of worms that maybe needs a separate thread.