We do have a staff group, so our actual staff get the title CHOICE staff member.
But still many users sign up with usernames like John-CHOICE which to an uneducated eye looks like a staff member. I’m guessing that they don’t intend to mislead, but it would be much easier if this was prevented at the signup stage so I don’t have to go around to them one by one and either ask them to change it or just change it for them which could irk.
So to take your Twitter example: it’s not possible for me to sign up with the username vivekatwitter or adminviveka or even vivekatwttr.
