Lose reputation when downvoting without a comment
8960
Encouraging people to explain downvotes
96392
Comment on a question without 50 reputation points
37845
Down vote changed to up vote caused reputation meter to pass daily maximum
56841
Make it more obvious that commenting is only possible after earning certain reputation
51806
Make it cost more to downvote without comment; make it hurt to leave a crap comment
24921
Reputation tab shows wrong change if downvoted answers were removed
34339
Lower the amount of reputation needed to comment
38792
Regain of reputation from downvoted and deleted answers - update FAQ
119103
Allow downvoting comments
151124
How to act when you're being serial upvoted
66003
Make the message shown to registered users without enough reputation to vote less confusing
76457
Is down voting supposed to be anonymous?
145834
Can you appeal against a downvote on Stack Exchange sites?
105542
Allow flagging a comment after upvoting it
64648
Is deleting a down-voted answer to preserve my reputation points bad?
131405
Why was "downvoting comments" declined? Should this feature be revisited?
107755
Alert on edit after a downvote