Does the MESE site change what education related questions are on-topic here? An earlier meta discussion suggests that questions about mathematics education research are generally off-topic, whereas such questions are on-topic at MESE. Is teaching mathematics at university level always on-topic at MO?
There are teaching related tags here at MO (teaching, mathematics-education). Should we add a note about MESE in the tag wiki excerpts of educational tags? This is not only about keeping MO clean from off-topic questions, but also about helping people find the best place to ask their questions. The exact wording of such a note could be anything from "There is also a separate Stack Exchange site for mathematics education: ..." to "Questions about mathematics education are no longer on-topic here. Please ask at ... instead".
Our help pages describe what is on-topic here and mention some other sites for other mathematical questions. Math.SE is included in the list (as it should), but MESE is not. Should we add it? If yes, how should it be worded?
I realize that this question is quite long and contains several different questions. If you think it would be better to split this in several pieces, let me know.