Is someone bypassing the duplicate submission logic by editing URLs.
Earlier submission here - https://news.ycombinator.com/item?id=8036515
Earlier submission here - https://news.ycombinator.com/item?id=8036515
If anything, the "duplicate submission logic" is not needed, except if we're talking about real abuse (tons of postings of the same thing that interests noone).
Reposts of items marked [dead] are generally not permitted, for obvious reasons. We won't bury this one, though.
What we should care about is if we have interesting articles to read -- and if people that might have missed something in the past have a chance to see it, that's for the better.
There have beens lots of very lively discussions on the 3rd and 4th posting of the same story, and I wouldn't want those people to miss the post entirely, or those conversations to never happen.
As for the duplicate poster getting points from something he knows will be popular again, well, nobody cares if he does get the points. HN is not some silly high score competition.