The question (How to write a good resignation letter when quitting under poor circumstances?) has been viewed 3844 times in 2 days and received 29 upvotes, but marked as duplicate. This must be because the earlier answers were not satisfying or the situation was different.
Also, my question (Is it fair to expect increment in pay for changing location?) is different from the question marked duplicate (Does my geographic location matter when requesting a salary?) because the user in that question was not already an employee of the company, so the answers have got to be different.
Answers should either be not allowed, or the duplicate marking should be taken off such questions. The situation for such questions is mostly different, but marking them as duplicate leads to same answers in all situations. Why are such questions marked duplicate even if they are contributing much to SE?