> Be kind. Don't be snarky. Have curious conversation; don't cross-examine. Please don't fulminate. Please don't sneer, including at the rest of the community.
> Comments should get more thoughtful and substantive, not less, as a topic gets more divisive.
> When disagreeing, please reply to the argument instead of calling names. "That is idiotic; 1 + 1 is 2, not 3" can be shortened to "1 + 1 is 2, not 3."
...
> Eschew flamebait. Avoid unrelated controversies and generic tangents.
> Please don't post shallow dismissals, especially of other people's work. A good critical comment teaches us something.
> Please don't use Hacker News for political or ideological battle. It tramples curiosity.
...
> Please don't pick the most provocative thing in an article or post to complain about in the thread. Find something interesting to respond to instead.
From https://news.ycombinator.com/newsguidelines.html, under the section "In Comments" (halfway down)...
> Be kind. Don't be snarky. Have curious conversation; don't cross-examine. Please don't fulminate. Please don't sneer, including at the rest of the community.
> Comments should get more thoughtful and substantive, not less, as a topic gets more divisive.
> When disagreeing, please reply to the argument instead of calling names. "That is idiotic; 1 + 1 is 2, not 3" can be shortened to "1 + 1 is 2, not 3."
...
> Eschew flamebait. Avoid unrelated controversies and generic tangents.
> Please don't post shallow dismissals, especially of other people's work. A good critical comment teaches us something.
> Please don't use Hacker News for political or ideological battle. It tramples curiosity.
...
> Please don't pick the most provocative thing in an article or post to complain about in the thread. Find something interesting to respond to instead.