public function keyCheck($apiKey, $url)
    {
        $check = $this->query(
            array(
                'key' => $apiKey,
                'blog' => $url
            ),
            self::PATH_KEY,
            self::RETURN_VALID
        );

        if ($check === true) {
            $this->apiKey = $apiKey;
            $this->url = $url;
            $this->apiUrl = sprintf('http://%s.%s/%s/', $this->apiKey, self::AKISMET_URL, self::AKISMET_API_VERSION);
            return true;
        } else {
            return false;
        }
    }