The system used on
Slashdot to get
feedback on those who award
moderator points to
articles and their
replies.
Let's say I write "First post! All geeks must die."
A moderator will soon mod it down as "Troll" or "Flamebait". That's fair moderation.
But what if some wiseguy had modded it up as "Insightful"? What if I got my friends to mod it up? That's unfair moderation.
Meta-moderation allows users to say whether the moderator was Fair or Unfair in making the judgement that they did. Someone who consistently gave high or low marks in a way that the meta-moderators felt was Unfair would no longer get moderator points.
Just a note for those of you who meta-moderate on Slashdot and also vote on E2: upvotes are to the left here, and to the right there. I'm so used to selecting the leftmost radio button that I very nearly metamoderated a whole lot of people as Unfair by mistake.