How does one know if a question is already answered
100366
What is best way to find duplicate questions?
134797
Refresh "Questions that may already have your answer" after adding tags based on these tags
94974
Asking similar questions - process?
70074
How to handle a deliberate duplicate question
31011
Asking a question that *must* have been asked before but I can't find
35162
Duplicate questions without answers
48639
Why prevent duplicate questions?
48530
How does SO give the "answers have been posted" notification?
106956
How long should I wait before accepting an answer?
14173
Show original question during editing a question
52266
How do I check if I have already filed my taxes [Unites States]
113626
"Close as duplicate" - what if only the answer is a duplicate?
153108
How do I find out the total number of accepted answers?
66659
Browser asks for confirmation when submitting a question or answer
57718
Answers to a deleted question not deleted?
112332
Show in linked/related questions sidebar whether a question has answers or not
146244
Notification of a more popular answer than the accepted one