I have to disagree with the accepted answer.

Why reject a perfectly good edit? What if the user put a lot of effort into the edit - why penalize them and risk them not participating in something they were interested in?

If it's not plagiarism (or un-cited) and it's not bad information - just approve it - it's acceptable. If the tag shouldn't exist, then that's something else to address.

You could even ping the user and explain that it's a meta-tag and point them to a meta question about it; but you don't need to reject the edit and basically tell the user "you don't deserve two rep for the effort you made."

Even in the privilege of approving tag wikis, there are only two requirements mentioned -

• All the content is original or attributed properly
• Wiki excerpts are concise and contain an objective description of the tag

nothing about "check to make sure the tag is useful." That's the job of someone that has the privilege of creating new tags.

I have to disagree with the accepted answer.

Why reject a perfectly good edit? What if the user put a lot of effort into the edit - why penalize them and risk them not participating in something they were interested in?

If it's not plagiarism (or un-cited) and it's not bad information - just approve it - it's acceptable. If the tag shouldn't exist, then that's something else to address.

You could even ping the user and explain that it's a meta-tag and point them to a meta question about it; but you don't need to reject the edit and basically tell the user "you don't deserve two rep for the effort you made."

Even in the privilege of approving tag wikis, there are only two requirements mentioned -

• All the content is original or attributed properly
• Wiki excerpts are concise and contain an objective description of the tag

nothing about "check to make sure the tag is useful." That's the job of someone that has the privilege of creating new tags.