Feature request: Can we make it so that a user has to give a reason to downvote a question or answer?
8960
Encouraging people to explain downvotes
58704
How to vote on friends / colleagues ' questions (or answers)
149440
Please don't require answer votes to be cast before question votes
57880
Add a note about downvoting on Meta
131405
Why was "downvoting comments" declined? Should this feature be revisited?
77934
Why there isn't a feature that lets any user on SO to request other user to answer their question?
51806
Make it cost more to downvote without comment; make it hurt to leave a crap comment
141234
Should we have a down-vote “safe zone” for new users with less than 50 reputation?
145834
Can you appeal against a downvote on Stack Exchange sites?
16630
Allow users to mark "accepted" answer on someone else's question?
39016
Inform new users if they can upvote an answer they accepted
134831
Ability to create questions with vote or comment or both disabled
85843
Reminding new users of accept/upvote "duty"?
2496
Is it acceptable to ask for upvote/accept in an answer when submitting it?
20792
Delay answer downvote rep loss to voter to help hide voter's identity
5113
Should basic netiquette dictate that we post reasons for downvoting?
44495
Allow an edit to notify downvoters: "I think I've fixed the issue now - please check"