I scoured meta and have not found any discussion on this topic.

I thought about it when I very much appreciated an edit someone made http://askubuntu.com/revisions/146161/2 which greatly clarified my original title http://askubuntu.com/posts/146161/revisions

And then realized I often would have upvoted, I don't see downvoting as being so useful though because you can really just roll back or re-edit if it is that bad. so, that's a little convoluted.

But, I do think, allowing an upvote/downvote next to each edit may:

1. Encourage good edits

2. Encourage more incentive to make edits

3. Discourage bad/careless edits

All in all, I feel it may be useful. Not so much a feature request as wanting to understand why it doesn't exist. Any thoughts ?