public function getUrl($options = array())
        {
            if(!is_array($options)) {
                $options = array(self::OPTION_EMAIL => strval($options));
            }
            $options = array_merge($options, $this->options);

            $url = $options[self::OPTION_HTTPS] ? self::URL_HTTPS : self::URL_HTTP;
            $url .= md5(\Thin\Inflector::lower(trim($options[self::OPTION_EMAIL])));
            $url .= "?s={$options[self::OPTION_IMAGE_SIZE]}";
            $url .= "&d={$options[self::OPTION_DEFAULT_IMAGE]}";
            $url .= "&r={$options[self::OPTION_RATING]}";

            return $url;
        }