> Internet people are usually a lot angrier than real world people.

Out of 100 people who read a comment, 99 of them move on even if they found it provocative. So the 1 that bothered to reply is the angriest of the bunch.

Yeah, I realize that I post too much on HN, but I don't feel that angry. More like a know-it-all motormouth who types fast enough to pollute a pretty big swath of the 'net in a short time. But I do think that the effort to participate online filters for motivated people, and frequently that's going to be some form of anger. "Wait a second, be right there, someone on the Internet is WRONG!" (paraphrased from an ancient comic)

I am concerned that long term commenting has negatively shifted my real life behavior towards being slightly more aggressive. Given enough time it feels like a behavioral shift can happen to people who are online way too much.