Have the ruby thing on github by any chance? Id love to check it out. I've been toying with the idea of writing a mud in ruby, and giving it a graphical web frontend to make it more accessible to new players.
Cool, I have one from a while ago that I got about that far as well. I was thinking about working through the Mud Game Programming book to get a working foundation going, but send me an email (in profile) once you start working on it again.