Punishment for standalone anonymous down-votes
51806
Make it cost more to downvote without comment; make it hurt to leave a crap comment
138671
Allow users to leave an anonymous comment when voting
126368
What should you do if you're serial downvoted & it isn't automatically reversed within 24 hours?
31967
Place questions with X net downvotes on hold automatically
155573
Who feels that down-voting is used destructively on Stack Overflow?
134870
Different implementation of downvoting: require comments
48257
Is Tactical Down-Voting ever valid?
66637
How to deal with downvotes without any explanation
140384
Please revoke badges gained by abusive voting
92084
Should the weight of downvotes be increased?
19373
Should we have a policy about "too much downvoting"?
45
A better serial voting trap
50556
Force Accepted Answers on Questions by Inactive Users
44432
Allow anyone to comment but hide low-rep users' comments until reviewed
5113
Should basic netiquette dictate that we post reasons for downvoting?
96431
Self-deleted posts and the 3 vote / 60 day rule
32212
Downvoting should cancel an upvote before attempting to apply the downvote