After seeing another LW user (sorry, forgot who) mention this post in their commenting guidelines, I've decided to change my own commenting guidelines to the following, matching pretty close to the SSC commenting guidelines that I forgot existed until just a couple days ago:
Comments should be at least two of true, useful, and kind, i.e. you believe what you say, you think the world would be worse without this comment, and you think the comment will be positively received.
I like this because it's simple and it says what rather than how. My old gui... (read more)