I came upon this Q&A
The least-voted answer, according to the comments, was downvoted because it's a "link-only answer".
(Kind of inconsistent, are we? The highest-voted answer is also a "link-only answer" but it has positive votes; the least-voted one had a negative post until I up-voted).
Now, checking the revision history, I saw that the answerer had edited his answer with very clear explanation. But ironically, his answer still has lower vote than the "link-only" answer".
I'm thinking that such situation is because those who had downvoted the answer did not realize that the answerer had significantly revised his answer, to the point that it doesn't deserve a downvote but an upvote instead.
Is it possible to add a mechanism to notify downvoters that an answer has been revised, so the downvoters can change their vote?
