Encourage explanatory comments for downvoting new users
8960
Encouraging people to explain downvotes
135838
Meta Stack Exchange should not penalize downvotes
42659
Proposal to solve the Uncommented Downvote problem
5394
Add downvote option to Low Quality Review Queue list of potential actions
99891
Can we actually discourage downvotes?
22966
Penalise Downvotes without Comment / Reward Downvotes with Comments
99709
Reviewing downvotes?
133532
Users posting a series of identical comments should be brought to moderator attention
131405
Why was "downvoting comments" declined? Should this feature be revisited?
131902
Could we provide some automatic feedback on (enough) unfriendly/rude comments?
143279
Canned reasons for up/down vote (w/ example of how it would work)
100443
Notification for comment upvotes
16146
Can we get x comment votes per y minutes, rather than one vote per 5 seconds?
8537
Could we please be a bit nicer to new users?
128754
A badge that rewards "prophetic" downvoting
105542
Allow flagging a comment after upvoting it
38709
How to prevent negative comments/downvoted being deleted by re-posting answers