In the guidelines, https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html see the section "In Comments". Comments vi

In the guidelines, https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html see the section "In Comments". Comments violating those guidelines are reasonable candidates for downvoting.