Mandatory comment after downvote
8960
Encouraging people to explain downvotes
128269
Comments asking for upvotes/accepts
134870
Different implementation of downvoting: require comments
24412
"Leave a comment" link even when you can't
133560
Omit comment replies from the minimum character limit check
92948
Allow Comments on Deleted Answers
12870
Would any other people want to remove downvoting
31985
Should a user be forced to add a comment when they vote to close?
131902
Could we provide some automatic feedback on (enough) unfriendly/rude comments?
5113
Should basic netiquette dictate that we post reasons for downvoting?
2290
Can we implement temporary automatic comment ban on 'x' number of validated rude comment flags?
70550
Cannot retract downvote if post has been edited within first 5 minutes of posting
107755
Alert on edit after a downvote
57880
Add a note about downvoting on Meta
55618
Option to be notified when a post I downvoted is edited
4440
Don't light up the achievements indicator when the only change is removed downvotes
56841
Make it more obvious that commenting is only possible after earning certain reputation