The best way to use your new downvote powers for good is to read the HN commenting guidelines: http://ycombinator.com/newsguidelines.html http://ycombinator.co

The best way to use your new downvote powers for good is to read the HN commenting guidelines: http://ycombinator.com/newsguidelines.html http://ycombinator.com/newsguidelines.html If a comment doesn't satisfy those guidelines then downvote it. Some people also downvote comments that they disagree with, but I typically avoid that tendency, and only downvote comments that come across as overly negative/critical, or are completely, obviously wrong.