So, I'm starting to create an automated Registration script. It already checks for duplications, but that's not enough. I'd like to ask for some in the community, on which names users shouldn't be allowed to register.
I got these usernames already prohibited:
"admin", "postmaster", "abuse", "daemon", "mailer-daemon", "support", "system", "root", "hostmaster", "postmaster", "host", "billing"