I have seen the Unsung Hero gold badge which is awarded on 10 accepted answers with total scores of zero.
My 10 answers have been accepted with score of 0. I have answered a total of 107 questions on which 13 are answers with 0 score. Out of these 13, 3 are answers to my own questions after research, but there are 10 questions which are accepted by other users.
I have still not been awarded the Unsung Hero gold badge. What is the reason?