I do think that site design has something to do with it though. Like the article says, there's only a "like" button on facebook, no "hate" button. I find it int

I do think that site design has something to do with it though. Like the article says, there's only a "like" button on facebook, no "hate" button. I find it interesting how seemingly subtle differences between facebook's "like", HN's down vote rep threshold, and slashdot's variation in types of up vote create very different cultures.