Kybyrian
シ
If most posts on this forum were flaming or spamming, the forum would not be in existence. To dissaprove of most posts can be counted as falsely de-repping, which is an infractionable offense.
I think he meant that he disapproves of bad posts more than he approves of good posts. He feels that pointing out mistakes to people if they are flaming/spamming/etc. is important. Therefore, he makes it his task to point out mistakes to people who are posting poorly.
As for me, I do a mix of both. I see a really good post, I approve it. I see a really bad post, I disapprove it. That can be a big rep-changer, though. For all of you reading this out there, don't make bad posts. You don't want 80 reputation points taken away from you.