Perhaps if there were some semantic way for HN to link an article to a previous one, like threading. For example, a text field with previous HN item ID and a t

Perhaps if there were some semantic way for HN to link an article to a previous one, like threading. For example, a text field with previous HN item ID and a type drop-down with "duplicate"# and "follow-up" fields. # For editors to reduce duplicate posts.