People explained me that it is possible to ask same questions in Math SE and MO, and I did this from time to time. I think it's very important to have this possibility, because often you haven't enough experience to estimate if your question is simple, or not. That is why when I am not sure that the question is of research level, I prefer to post it first at Math SE, and only if there is no answer, I ask it in MO.
But yesterday my cross post lead to a situation when people duplicated their efforts. That was my fault, of course, since I forgot to give a reference in the original post (it was late night in my city, I am sorry).
I want to avoid this situation in future for newcomers. My question is
if it is possible to make a special button "cross post" so that when people push it, the necessary links (between two posts) appear automatically, together with the explanation of when it is proper to use this opportunity?
This could be organized like the procedure of bounty now: after two days it becomes possible to cross post the question. What do you think?