User blog comment:Agent M/Shout Box V.2/@comment-98.151.22.30-20110210015310/@comment-3242362-20110210041614

Well, it worked for me as both an anon and as a registered contrib on many wikis. Could it be they've locked the page so it can only be edited by registered users or that it can't be edited at all by anyone but bureaucrats and admins?