I edited (or rather, suggested an edit) on a question about Chuck montages on Planet Ubuntu, to add the tag 'planet-ubuntu'. It was rejected with the following reason:
This edit is too minor; suggested edits should be substantive improvements addressing multiple issues in the post.
If the reason said that we don't need a planet-ubuntu tag or something like that, it would have been fine. But why is adding a tag too minor an edit? Is adding a tag always a too-minor edit, or are there situations in which adding a tag is acceptable?