Running the numbers for Monica, one of our most prolific voters - in the past month, this would have almost doubled the number of notifications she received - this alone resulted in almost the same number of notifications as all other activity combined. I think it's worth thinking about some sort of mechanism to prompt voters to review - especially for downvoted posts that are later edited - but I'm not sure an indiscriminate notification is it.

Couldn't you just have a checkbox in your settings, that says "don't notify me about edits to questions I voted on"?

(I didn't know my activity was so far out of the normal range.)

Maybe we should think about something narrower, and opt-in not opt-out, where you can choose to be notified of vote changes on a post-by-post basis. Sort of like following new comment threads, maybe a more general "follow changes" that would include edits and (for questions) new answers? If you'd reconsider your vote if the post is edited, you'd click that "follow activity" link, right? (With corresponding unfollow link, for when you decide you've had enough.)

Follow changes actually sounds like a better idea. I think Stack also had a "bookmark" button where you would get notified about answers even though you didn't post the question. I don't know if it notified about edits. Plus you couldn't follow answers, only questions.

Follow activity (ideally for both questions and answers) sounds like a better feature. It seems hard to imagine wanting to be notified about comments and not edits, or vice versa. To be fair, you could make both separate opt ins at the cost of slightly more code.

Based on feedback from you two, I don't like this question anymore. I think it's badly phrased - it should be asking for a follow activity feature, not edit notification. What's better, if I edit it, or delete and post a new one? Or just leave as is and assume people will read the comments anyway?

Nobody's answered yet, so feel free to edit. We shouldn't assume people will read the comments.

Another option is to write your own answer, in which you reject your own initial suggestion and propose the edit notification scheme instead (with at least a sketch of how it could work).

I went ahead and added an answer (with some open questions).