I don't like user accounts that everybody knows about - just like "admin" - it is just one more thing to make a hack easier. I have another user that is in the admins group. So, unless there are special abilities if the username is "admin", which another user in the "admins" group does not possess, I want to get rid of this user - or at least rename it. How do I do that? Or why should I not?
For now, I just removed "admin" from every group there is, leaving the account without any groups. The account acts like it was in group "registered".