It has been my experience that if you have to append "?s=hn" to the URL in order to bypass the submission filter it means that the link has already been submit

It has been my experience that if you have to append "?s=hn" to the URL in order to bypass the submission filter it means that the link has already been submitted before. I have always assumed that pg had a reason when he put the duplicate submission filter in place. As pg's guests I have always thought it best not to try and get around the way he thinks HN should operate.