New version released 6.0!
!SEO improvement fixed canonical used for the homepage, custom pages and ?action=forum thanks to shawnb61
SMF 2.0.x users have to uninstall ezPortal and install new version since requires edit to the Sources/BoardIndex.php


Edit for SMF 2.0.x if you can't uninstall and need to install on top of latest
Open Sources/BoardIndex.php and Find
        // EzPortal
        if (isset($_REQUEST['action']))
        {
                if ($_REQUEST['action'] == 'forum')
                {
                    $context['robot_no_index'] = false;   
                }                   
        }

   

        // End Ezportal
Change to
        // EzPortal
        if (isset($_REQUEST['action']))
        {
                if ($_REQUEST['action'] == 'forum')
                {
                    $context['robot_no_index'] = false;   
                }                   
        }

        if (isset($_REQUEST['action']) && $_REQUEST['action'] == 'forum')
          $context['canonical_url'] = $scripturl . '?action=forum';

        // End Ezportal