- If the tag can’t work as the only tag on a question, it’s probably a meta-tag. Every tag you use should be able to work, more or less, as the only tag on a question. Meta-tags, like
[best-practices], are useless by themselves — they tell you nothing at all about the content of the question.
recovery was, on all the questions to which it was applied, a meta tag modifying some more specific tag (e.g. spins). I also can't see a situation where it would work on its own, as you need to be recovering from something.
I have retagged the affected questions, and recovery should die out on its own within a few hours.