Duplicate accounts in community list
99857
Duplicate accounts in accounts tab
33449
Why does Stack Overflow allow duplicate display names?
57636
Automatically suspend accounts recreated after a moderator deleted the original
19126
Old usernames stick to Community Wiki posts
60924
What is the view on accounts shared by multiple users on Stack Overflow?
31943
Other Stack Exchange accounts are not shown in my profile
94964
How to get list of duplicates when using DeleteDuplicates?
71644
How can I remove existing duplicate accounts and records at once?
76831
Stack Exchange Inbox Items Duplicated (And Then Some)
143056
Can I use set instead of List to resolve the duplicate id issue
64180
Merging duplicate accounts in Apex - Governor limits
70977
Moderator name appears twice on deleted post
130555
Wrong number of accounts displayed
78288
Each login creates a new StackExchange account
87730
Community user "stealing" tags?
115301
Can I Prevent Enumeration of Usernames?
61456
How to remove accounts from "Choose an account" list in Google sign in?