This page is not a stub. This is all there is to know about this subject.
Reporting is a tool on the sharty that allows you to tip moderators about rule-breaking posts, it's a fundamental feature in every modern imageboard & website in general. Abusing this feature on the soysphereWILL result in temporary punishment under certain conditions.
The wiki has its own reporting extension developed by Fenriris. To report something on the wiki, go to the revision where the offending content was added in the page history, and click the "Report" button next to the "Undo" button.
Does nothing, unless a janny decides to hand you a 3 dayer for "false" or "misclassified" reporting, even when it's obvious that the post broke the capriciously enforced rules, including the one you reported it for. If you're on a board with infamously slow jannies, you may have better luck with reporting a post for violating United States law, which sends the report to all sitewide moderators. It might not do much in practice because your report will just be ignored or you'll get a 1-3 day ban for heckin misclassified reporting, but that'd happen anyways with normal reports.