bad source originally included "links to a completely different image", but now that Danbooru maintains the tag automatically for something different, a new tag is need for irrelevant sources. In my case, I'm concerned with cases where a pixiv artist "revises" an image collection to no longer contain certain images (e.g. pixiv #69181924 and post #3169552).
evazion suggests source mismatch (issue #5161). Thoughts?