Ah, I love that the top voted comment is someone mentioning Hotline. I'm logged into my friend's server - one I've been frequenting regularly since it was started in 2001 - at this very moment! I also ran my own server for years, of course. I really want to build "IRCCloud but for Hotline" sometime. I mean, just a basic self-hosted thing to start with. One of these days... haha
Recently I've started noticing people hosting gopher sites and I've actually noticed two different people specifically mentioning they have finger support on their servers! This was especially surprising since I haven't heard someone mention finger since the 90's. Very cool.