I like this idea too as it should help improve the site. If posters see a reclamation of rep after fixing a post then it makes them a) more likely to do it in the future and b) more aware of what a good post looks like.

The only drawback is that it could lead to a lot of notifications and if we send users too many notifications then they could start not only ignoring these, but other ones as well.

A better solution might be to have a tab on your profile - only visible to you - of posts edited since you voted on them (both up **and** down) where you can check the edits and review your vote.