Every week we have a question (or five) about accidentals. 9 out 10 times the answer is: "courtesy accidental". I can't blame the people who asked the question, because if they never heard the the term, so they didn't know what to search for.
When you ask a question, SE shows list of similar question. I wonder if there is a mechanism that would allow us to suggest anyone asking a question about accidentals a nicely written article (perhaps titles "Unnecessary accidentals") about courtesy accidentals? That would both save the time of the person searching for information, as well as free us from manually marking the question as duplicate.