Mod abuse
When a moderator or administrator abuses his (or her but let's be honest, it's usually a guy) powers to rule over other people and suppress their posts. Usually done by websites that promote bad moderation teams eg. GameFAQs.
Error1355: I like this game
Poster 1: I don't like it
Error1355: *moderates post, gives 3KL* mod abuse
Everyone: Wow, Error is a complete faggot.