Yes, I operate a shell service.
No, you may not have an account.
Generally, accounts here are issued to personal friends who have a genuine use for them, either for educational or practical purposes. Accounts are initiated on an as-needed basis, and unused/empty ones are periodically obliterated.
The accounts code itself is my own doing, a project I did for educational purposes. It has quite a few nifty features, and is entirely based on standard Linux/Unix services: MIT Kerberos, LDAP, NFS, Apache, etc. Someday, if I can get it to be portable enough, I'll release the code (I like open source stuff). There's just a looooooot of bits and pieces.
All accounts are subject to the shell access terms of use.