I am getting sick of comment moderation. Not that the system itself is flawed, it's almost ideal. It's the people doing the moderating that bug me, they do not improve the quality of the posts one iota.
Case in point: I made a joke in a discussion about Dungeons and Dragons. Got modded way, way down because the moderators lack a sense of humor / are too impulsive to meaningfully read sigs. In a discussion about Half Life 2, I posted a complete lie about how to crack the game. Gets modded Interesting +42.