This function smites or applauds as needed...

• There are lots of checks in this file to make sure you're not cheating
• Redirects back to the referrer afterward, whether by javascript or the passed parameters.
• Requires the karma_edit permission, and that the user isn't a guest.
• Depends on the karmaMode, karmaWaitTime, and karmaTimeRestrictAdmins settings.
• Is accessed via ?action=modifykarma