A meta-moderation system is an arrangement used on some Internetwebsites (such as internet forums, web logs and news websites) which invite user comments.
Users rate how good a job moderatorss are doing. The most famous site with such a feature is Slashdot. Users can enter "meta moderation mode" (or something similar) and will be shown a post that was moderated in its original form, and the nature of the moderation. The user then decides if the moderator acted fairly or not- and if not, in what respect the moderator was wrong. This information is used to improve the quality of moderation on the web site.
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