Can we stop 'experienced' SE users from marking questions as duplicate on their own?
13335
Someone flagged my question as already answered, but it's not
149990
Preventing misuse of question self-deletion
82853
Can Community ♦ raise a duplicate content flag when an answer is deleted and re-posted as a new answer?
138642
Should the "closed as duplicate" message be altered?
33502
Remove Punctuation When Checking for Duplicate Titled Questions
22831
Changes to "close as duplicate" (part deux)
147713
User seems to edit and flag own questions for deletions
111647
How to find questions closed as duplicates via the Data Explorer
106883
Auto-flag duplicates of deleted questions for reopening / deletion
51087
Remove votes to close question X as a duplicate of Y if question Y is closed as a duplicate of X
7406
When merging questions, leave the duplicate one as a placeholder
18509
Does the new guidance on duplicate questions suggest closing a question as duplicate, if the original answers the OP's question?
71476
How to deal with duplicate answers posted long after first answer(s)
57056
Opinions on closing an older question as a duplicate of a newer question
19629
Where is it preferred to place the answer to duplicate questions?
43391
prevent user creating a duplicate node title
9026
"Possible duplicate" notice not removed after reopening question