protected function getPageUrls($SHDObject)
    {
        $urls = array();
        // anchors in Ask's SERP are in the class "txt_lg"
        foreach($SHDObject->find('.txt_lg') as $object) {
            $href   = $object->href;
            $urls[] = $this->cleanUrl($href, array('/^\/url\?q=/', '/\/&amp;sa=.*/', '/&amp;sa.*/'));
        }
        // fetch only organic results
        return $this->normalizeResult($urls);
    }