404. That’s an error.
The requested URL /add?source=atgs&feedurl=http%3A//pipes.yahoo.com/pipes/pipe.run?_id=_n66gJ0B3hGLHoyQ_w6H4A&_render=rss was not found on this server. That’s all we know.
/add?source=atgs&feedurl=http%3A//pipes.yahoo.com/pipes/pipe.run?_id=_n66gJ0B3hGLHoyQ_w6H4A&_render=rss