What's up with the all the users whose names start with "user"?
55873
Significance of the users like 'user'
11085
User was removed ... Ok, why am I getting punished for it?
9508
How to reply to one user among two having same names?
144982
Certain usernames not displaying at all
35623
Created a new user at Stack Exchange, but did not get the right username
49874
He who must not be named? (aka Anyone can ping everyone in chat)
85756
How to find users by name
95514
How can I find out my user name?
78198
Search for users has a blind spot
118227
What do the groups do in "Users and Groups"?
95140
How do I see a list of all suspended users?
152205
Who are the users that work for Stack Overflow?
67698
What is the root user
31857
Where did this user's rep go?
46486
What's the difference between a normal user and a system user?
146694
Eeeek! "Community" user got sudden rep boost.. how come?
147029
Possibly offensive usernames