Earlier quoted context omitted.
I've found moderation on HN to be a bit heavy handed recently. Specifically when it comes to the issue of sexism in SV. No matter the opinion, posts on this seem to get removed shortly after reaching the front page. Question for the mods: Why? It doesn't appear to be a bias towards either side. Is the perception just that people are tied of hearing about it? Why not let the users decide that?
Huge flame wars get a lot of upvotes and lots of comments -- but it's essentially the forum equivalent of candy. If you want your forum to have some nutritional value than you can't let the candy topics run rampant no matter how much people seem to want them.
It's possible to moderate a discussion forum to avoid this, but it requires a high level of involvement from the moderators and a willingness to aggressively recognize and prune divisive commentary regardless of the specific tone or content.