Quite often I read Duplicate or Closed as not constructive warnings and think, but it's not a duplicate or it is constructive and I have just the answer he/she is looking for. Obviously were all to busy too report each and every concern to Meta.
I wonder if a useful feature addition to Stack Overflow and the wider StackExchange series would be to have a button or some kind of thumbs up/thumbs down and comments area on the Modorators Notes. That way if a moderation action gets significant negative feedback, they may considerer and revert their actions.
For example just today I was reading a question regarding clicking the map on OSMDroid (link below), and was able to overcome the OPs problem. I wanted to post but it was marked as duplicate against another question that was regarding Google Android maps, so different.
It would be nice to have a quick and simple way of marking the moderation action as a possible error with a comment so they may review. I appreciate the mods are very busy and may not have the time to read all questions fully, this may help all of us out. Mods could then say review the top 10 or 20 most contested actions on SO.
The question below is an example of a moderation error.