The question "What are some good ways to keep students coming to lectures?" has been posted here at Academia.SE and simultaneously over at Matheducators.SE. When I noticed this I commented on both questions and gave the link to the respective other site. I guessed that mods or high-rep users would take care of this issue. Now what happened is that on Matheducators.SE there is a comment by aeismael asking to keep the question open on Academia.SE and here on Academia.SE my comment with the link to the Matheducators.SE question is deleted.
While I have no particular feeling where the question should be open I think that only one of these questions should be open as long as they are asking precisely the same thing. Keeping both questions open results in exactly the things that crossposts do: Duplicate work on different sites and also an inferior collection of relevant answers on both sides.
My question is: Is the current status OK for the mods here and on Matheducators.SE? How should questions like this, i.e. question that fit on two sites and may receive good answers from both communities, be handled?