Ah a public shell, fond memories. I used to have a nic-nac-project (now freeshell.de?) account some 15 years ago. It was my first exposure to Debian, which led me to order a free mail-in CD of Ubuntu Warty Warthog. These were different times.

Unfortunately public shells largely went the way of the dodo due to how cheaply you can get a VPS now (and not worry about resource quota, ulimits, local exploits or lack of root access...)