seems that some urls with a query string give an error eg make a purl for http://www.reddit.com/top/?sort=top&t=hour http://www.reddit.com/top/?sort=top&t=hour

seems that some urls with a query string give an error eg make a purl for http://www.reddit.com/top/?sort=top&t=hour http://www.reddit.com/top/?sort=top&t=hour which generates http://purl.ly/www.reddit.com/top/?sort=top&t=hour http://purl.ly/www.reddit.com/top/?sort=top&t=hour which gives a 404