public function getKeywords()
    {
        $keywords = [];

        foreach ($this->config()->get('global_keywords') as $k => $v) {
            $keywords[] = '<strong>'.$k.'</strong> ' . $v;
        }

        if ($this->NotifyOnClass && class_exists($this->NotifyOnClass)) {
            $dummy = singleton($this->NotifyOnClass);
            if ($dummy instanceof NotifiedOn || $dummy->hasMethod('getAvailableKeywords')) {
                $myKeywords = $dummy->getAvailableKeywords();
                
                if (is_array($myKeywords)) {
                    foreach ($myKeywords as $keyword => $desc) {
                        $keywords[] = '<strong>'.$keyword.'</strong> - '.$desc;
                    }
                }
            }
        }

        return $keywords;
    }