Does anyone know what intersection is for? There is a proposal to remove it, 2 upvotes so far. Almost 70 questions are using this tag at the moment, so it will take some work to remove it.

Sometimes it would be useful to have the possibility to find out in which question the tag was crated, but it seems that such feature request was refused - it has status-declinded at meta.SO: Can I find out which tags I have created?.

It is quite probable that it is the oldest question in the tag, but it might have happened that the question which created the tag was retagged in the meantime.

For tags like searching or intersection, which are use in various meaning, we would be able to see what the creator of the tag had in mind.

Of course, even it would be even nicer if a person creating a tag wrote also a tag-wiki for it, where the intended usage would be clarified.