I've read that you can change your vote after something you've voted on has been edited. I didn't find any discussion about how you would know an item you voted on had been edited.

Does this functionality exist? Should it?

How often are questions/answers with votes edited? Would it be too much noise?

There is some discussion specific to someone who's been downvoted having the ability to notify the downvoter that the item has been edited:

[Allow an edit to notify downvoters: “I think I've fixed the issue now - please check”](https://meta.stackexchange.com/questions/1751/allow-an-edit-to-notify-downvoters-i-think-ive-fixed-the-issue-now-please-c)

[Feature request: @Downvoter sends a notification to all downvoters for your post](https://meta.stackexchange.com/questions/37090/feature-request-downvoter-sends-a-notification-to-all-downvoters-for-your-post)

That's not the point of my question, what if you've upvoted an item and that item is changed in a way that you wouldn't have voted for?

Rather than giving the user who was downvoted the access to contact the downvoter (even if the downvoter remains anonymous),

I'm thinking of an automatic notification.

**Clarification:**  

This is about having useful questions and correct answers that are indicated as being useful or correct by the votes that are applied (both up and down).

Is the work involved in implementing this feature worth the effort?  

Is the time required by members to go check the result of an edit worth their time?  

Would such a feature have a noticeable effect on the accuracy and usefulness of the information available on the site?

**Update:**  

@Jirka Hanika mentioned the Favorites functionality, it seems like that might be a good model. If you go to your user page and a favorite has been updated, the favorites tab indicates that something has been updated. You can click on it and sort by activity to see the latest items that have changed.

@Jav\_Rock pointed out that edits will more likely make a question better rather than worse and suggested limiting notifications to those edits made within an hour of the original post.

As a way of **reducing the noise** caused by edit notifications, they could be limited to:  

Edits on questions/answers that you've **down voted**.  

Edits by the **original poster**.  

Edits made within a **limited time frame** after the original post. 

**Additional question:**  

You can change your vote after something you've voted on has been edited.  

What's the point of having that functionality if you don't know that something been edited?

If a tree falls in a forest and no one is around to hear it, does it make a sound?