You reminded me with your talk of MUDs of the growing IF (interactive fiction) movement. It's not multi-user, but it has a lot of the feel of those old text adventures. If that's interesting to you, I'd recommend trying out Blue Lacuna - http://blue-lacuna.textories.com/
Do you mind me asking why? I was going to implement the protocol as an intro rust project, but Wikipedia and others called it obsolete so I ended up falling back onto the familiar IRC bot. My interest is still piqued however...
Historical interest, mainly. Gopher is still used, but not by any large number of people; however, it occupies an interesting place in the history of the Internet as the main implementation of the idea of hypertext before the Web caught on.
Go is the language name, golang is the search-friendly alt, and "gophers" are the users of the language. Your apparent distaste for Google doesn't justify your mean attempts at humour.
http://en.wikipedia.org/wiki/Gopher_%28protocol%29