We should talk to each other in the Lounge section as though we were sitting in the same room together. That would dampen most, if not all of the emotional flare-ups.
After reading David Frieburger's column in Hot Rod about how the Internet is ruining hot rodding (because of all the chair-throwing and excessive mean-spirited nit-picking), I do a lot less typing on Internet forums.
Sometimes I find myself typing away and I stop and say to myself, "You're typing again..." and I hit DELETE.
Hell, I almost deleted this.
Keep it respectful of the other guy and at the very least, agree to disagree. Write as if you're sitting next to the other guy at a car show and a lot of the angry emotional reactions will cease.
Remember what your mother told you: "If you can't say anything nice, don't say anything at all." (And then she'd whack you with a wooden spoon.)

Oops, I mean: