Moderates comments.

def allow(self, comment, content_object, request):
        """Moderates comments."""
        
        POST = urlencode({
                "blog": settings.AKISMET_BLOG.encode("utf-8"),
                "user_ip": comment.ip_address,
                "user_agent": request.META.get('HTTP_USER_AGENT', "").
                                                encode("utf-8"),
                "referrer": request.META.get('HTTP_REFERRER', "").
                                                encode("utf-8"),
                "comment_author": comment.user_name.encode("utf-8"),
                "comment_author_email": comment.user_email.encode("utf-8"),
                "comment_author_url": comment.user_url.encode("utf-8"),
                "comment_content": comment.comment.encode("utf-8")})
        connection = HTTPConnection(AKISMET_URL, AKISMET_PORT)
        connection.request("POST", AKISMET_PATH, POST,
                           {"User-Agent": AKISMET_USERAGENT,
                            "Content-type":"application/x-www-form-urlencoded"
                            })
        response = connection.getresponse()
        status, result = response.status, response.read()
        if result == "false":
            return True
        elif result == "true" and settings.DISCARD_SPAM:
            return False
        elif result == "true":
            comment.is_removed = True
            comment.is_public = False
            return True
        else:
            raise AkismetError(status, result)