I have chosen to have the administrator (that's me for now!) create new accounts. Is there a commonly accepted best practice when it comes to assigning user names? Email names (for example, "jsmith" or "mildred107")? Email addresses (for example "firstname.lastname@example.org" or "email@example.com"? Firstname.lastname (for example, "john.smith" or "mildred.jones")? Any clues greatly appreciated.