Thread:Merrystar/@comment-4770882-20120815032110/@comment-11001-20120815040454

Google visits each webpage in its index periodically and the results there will not update until it happens to visit your wiki again.

The main page of the wiki is controlled by MediaWiki:Pagetitle-main. Mediawiki:pagetitle simply controls the rest of the pages on the wiki, which you don't appear to have.