The mechanics tag seems to get applied reflexively by askers to all sorts of questions that are unrelated apart from asking for clarifications. It does have a tag wiki and a few (7 as of now) followers, so maybe that indicates that at least a few people find it useful?
I noticed it just now as I was cleaning rules tags from questions. Unlike the almost-always-redundant rules tag though, mechanics seems to get used a lot. Is there a useful difference between them? Should rules be a synonym of mechanics? Should we have a rules-clarification tag instead, or would that be too much a metatag?
It seems to me that mechanics lies in a grey area that lies between metatag-ness, redundancy, usefulness, and over-use.
I don't have an opinion, which is why I'm asking. It's a funny-looking tag to me—too funny-looking to be able to form a coherent opinion either way. Thoughts?
For reference, here is the original discussion of the [rules] tag. Arguments against the [rules] tag might be applicable here and vice versa.