I want to know explicitly if questions that exist only within the scope of Magmi (such that they are only useful to users of Magmi) are off-topic, as a question I posted recently got put on hold as off-topic because it was within the scope of magmi (Magmi product import with image attributes processor can't find images) I already knew the rule regarding third-party extensions/applications but I know (as stated in this meta post's answer Questions about extensions) that if:
"they are an integral part of the Magento landscape, then certainly they should be on topic"
I don't quite know what this means but I assumed it meant applications that are popular enough to be considered a must-have install for magento installations and I would consider Magmi exactly that (as the most popular alternative to magento's import functionality).
I was still cautious about posting the question but I finally concluded that it must be on-topic to do so as the magmi tag does exist and includes 153 questions that are mostly within the scope of only magmi (https://magento.stackexchange.com/questions/tagged/magmi) and none of these are off topic and have answers, comments and activity.
So what exactly is the clear rule on posting questions with the magmi tag? The community behaviour on this seems more than a little confusing.