+
+> Ikiwiki always has some work in this area; there is
+> the moderatedcomments plugin and the `checkcontent` hook.
+> The hook allows, for example a plugin to reject changes
+> with spam links or swear words. A plugin could also use
+> it to save the diff for later moderation.
+>
+> I think the difficulty
+> is in the moderation interface, which would need to apply the diff
+> and show the resulting page with the changes somehow evident (for users
+> who can't just read diffs), and would have to deal with conflicting
+> edits, etc. --[[Joey]]