I generally agree that it's good not to have many dupe but in this case there was a lot of upvotes and a lot of comments and tagging the link as "dupe" just des

I generally agree that it's good not to have many dupe but in this case there was a lot of upvotes and a lot of comments and tagging the link as "dupe" just destroy the discussions. Why not just make successful "dupe" link stay but not bring karma to the poster ? That will stop the perverse incentive to try to submit old successful link for easy karma.