I was bored on a flight with crap Internet and, like everyone else on that flight, entertained myself by reading random manpages on my Mac. I think I read the one for finger, and I think it's still from BSD4.4, as its last updated date is from 1993!
In other news, I was born too young to use finger, but I definitely used Hyper terminal on Windows which had a chat like console app that worked with it. (I think it's called CHAT.EXE; I wonder if Windows still includes it in their production images.)
I also still use w to see who's logged into stuff (useless on containers...but sometimes useful!) and the type command to print out definitions of functions from the absolute disaster that are my dotfiles (someday I'll clean them up!)