404. That’s an error.
The requested URL /add?feedurl=http://www.randomhouse.com/catalog/rss.pperl?cat_id_ex=Language%2520Arts%2520%2526amp%253b%2520Disciplines%2520%252d%2520General:4444 was not found on this server. That’s all we know.
/add?feedurl=http://www.randomhouse.com/catalog/rss.pperl?cat_id_ex=Language%2520Arts%2520%2526amp%253b%2520Disciplines%2520%252d%2520General:4444