It would work well if your issues are all correctly formatted (ie "Fix: XYZ", "Add: XYZ"). For open source projects, though, you'd have a ton of "Closed Issue" items for random questions where people treat issues as forums. That puts me off.
Hey, thats for a labels! As I mention in README: any issue, that has label "question duplicate invalid wontfix" will be excluded by default. And you can change list of this labels.
