I have suspected this for a while, because in the review queue I often see questions people have voted to close as "not constructive" that several people have marked as "not a real question", and similar. And now I have proof.
There's a bandwagon effect going on: people are agreeing with existing close votes without thoroughly evaluating whether they're accurate.
This question that showed up in the review queue, https://stackoverflow.com/questions/12048054/clicking-xspf-file-opens-in-broswer-instead-of-vlc, is about setting up file associations under KDE:
so it clearly belongs on Super User. But in the close dialog I see:
There's no way two different people would think it belonged on Server Fault; clearly what happened is that the first person hit the wrong choice (they're adjacent) and the second followed. If I hadn't noticed this it would have been migrated to the wrong site.
Is this an important enough problem? If so, how can it be remedied?