Strategy for old technical questions having obsolete answers
16653
How to deal with obsolete answers?
141815
Rolling back a completely changed question
14309
Collapse comments on old questions
48120
Sorting new answers to old questions
32895
How can I avoid asking duplicate questions?
93458
How can I ensure that old documents will compile in the future?
88207
Automatically protect questions with three or more low-rep-user deleted answers
106883
Auto-flag duplicates of deleted questions for reopening / deletion
87154
What to do if an out of date question+answers already exists?
8491
Can we have a red/status tag for "obsolete"?
75001
Does it make sense to put new or bad questioners in a "sandbox"?
36484
Handling answers that build heavily on (or are copied outright from) existing answers
145092
What should we do with old, very popular closed questions?
155263
How to best handle no effort questions?
116288
How can I improve questions marked as duplicate?
98120
How to handle bad questions with good answers?
138735
Questions with once good answers that are now out of date and need updates