Wasn't sure where to put this question in seo or in cms or here, so mods can move this if they want Anyway I am using Drupal which has page names as example.com/node/21 but I am also using url rewrite so same page becomes example.com/this-is-page . Now Google see these as two pages with same content, putting both in supplement. Infact my whole site is under supplement results. What can I do ?