In specific reference to a retag of this question, tags were added for [fruit] and [bananas].
My concern is chiefly: the [bananas] tag didn't exist before, so why create a tag for this question? The [fruit] tag actually makes sense and is in good use.
Seems like it must be a black art of knowing all the tags on the site, because I definitely looked around for a while and tried to pick through tags that made the most sense. And, I didn't want to throw in too many tags, either.
Another part of my concern isn't so much the tags, but that the question then shows it was fully "edited" and nothing constructive occurred, nor was anything corrected. Maybe this is just the way things are with SE sites. That may be a topic for another discussion, or something that is answered elsewhere, but I'd be interested in an answer/comment or relevant link to elsewhere containing the same.