Sorry for not replying earlier, my machine has spent most of last week in parts on a table. Upgrades...
Anyway, the reason for the registered only users is this.
1) Only those who have a valid account with their *own* password can log into the server
2) No password sharing, thus no-one can waste my bandwidth giving out access to people I don't know. Yes, they could share an account, but I have a feeling it wouldn't work (or if it does, then that should be fixed)
3) Forces people to properly identify themselves for logging purposes.
It's all about the audit trail...
(It's my machine, I want to know who's using it...)
Hey, it's just a suggestion!