hi everybody, i have a smf forum, with some mods and settings to prevent duplicate content.these rules work fine to prevent duplicate content and remove unnecessary index. the problem i have is when a topic have multiple pages(1,2,3...) the first page generate this url seo4smf-instalar-simplemachinesforum-url-legibles-tutorial-definitivo-t4591.0.html the others pages look like this eo4smf-instalar-simplemachinesforum-url-legibles-tutorial-definitivo-t4591.15.html eo4smf-instalar-simplemachinesforum-url-legibles-tutorial-definitivo-t4591.45.html with the same meta description. the canonical tag dont work, because link to the same duplicate page <link rel="canonical" href="/foro/promocion-y-posicionamiento-en-buscadores/seo4smf-instalar-simplemachinesforum-url-legibles-tutorial-definitivo-t4591.30.html" /> <link rel="canonical" href="/foro/promocion-y-posicionamiento-en-buscadores/seo4smf-instalar-simplemachinesforum-url-legibles-tutorial-definitivo-t4591.45.html" /> there is away to block the url param in bold, 15,30... and only index the first page seo4smf-instalar-simplemachinesforum-url-legibles-tutorial-definitivo-t4591.0.html