Why was "downvoting comments" declined? Should this feature be revisited?
119103
Allow downvoting comments
99709
Reviewing downvotes?
155996
Auto-upvote comment during Low Quality review when selecting same reason
141234
Should we have a down-vote “safe zone” for new users with less than 50 reputation?
49487
Why are low-rep users rate-limited when posting questions?
9917
Reputation for comments?
57880
Add a note about downvoting on Meta
55618
Option to be notified when a post I downvoted is edited
128175
Could the favourites mechanism be extended to include comments?
93957
How do I prevent getting downvoted?
155573
Who feels that down-voting is used destructively on Stack Overflow?
5394
Add downvote option to Low Quality Review Queue list of potential actions
44495
Allow an edit to notify downvoters: "I think I've fixed the issue now - please check"
51806
Make it cost more to downvote without comment; make it hurt to leave a crap comment
80121
Send request for "reason for down vote"?
18896
How does comment voting and flagging work?
69144
Should there be a "No vote, but okay" option in reviewing first posts?