Please review our existing tagging guidelines.
fix, salvage, mistake and the similar tags that were discussed on chat today are not appropriate uses of tags. These are basically no different than a help tag. These are all meta-tags that are entirely too broad and the benefit they seem to provide is illusory.
There will not exist a subject-matter expert on "fix". However there do exist SME's on sauce, bbq, or baking. If I have a problem with a problem with a messed up hollandaise I'm going to search for "hollandaise" which will provide relevant results. Searching for "fix" would provide broad useless results.
For additional historical reference please also refer to "Tags that might be meta ...