Because the URL is different: http://www.tlb.org/keyboardchop.html http://www.tlb.org/keyboardchop.html vs. http://tlb.org/keyboardchop.html http://tlb.org/k

Because the URL is different: http://www.tlb.org/keyboardchop.html http://www.tlb.org/keyboardchop.html vs. http://tlb.org/keyboardchop.html http://tlb.org/keyboardchop.html HN does not try to "normalize" URLs. You can also add parameters... if you submit the following it will also be a new entry: http://tlb.org/keyboardchop.html?hi=hello http://tlb.org/keyboardchop.html?hi=hello SearchYC did not turn up anything with either of these URLs as the main item, but the link was mentioned in the context of this discussion: http://news.ycombinator.com/item?id=185743 http://news.ycombinator.com/item?id=185743