I would like to know why What is the origin of "playing into someone's hands"? was removed from the HNQ1 list. According to the guidance given in this post
In general, we recommend that you exclude questions that attract negative attention to your sites, that is, questions that are controversial, start large amounts of debate or arguments or even edit wars. Removing a question should not be a substitute for fixing it! Remember that it may take several hours for a moderator to respond to a flag so do what you can, first:
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this question did not attract negative attention: it was not controversial, did not start large amounts of debates and there were no edit wars. The question was closed once, but it was edited (and really well too) and reopened (after which it became a hot network question). The etymology and phrase-origin tagged question surely "made the site look good to visitors" and even attracted an answer from an expert.
P.S. It was a Hot Network Question for almost two days, just about one day short of being automatically removed from the list.
1 For new users visiting this site, HNQ stands for Hot Network Questions.