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On Stack Exchange, often, when questions are closed as duplicates, they are closed as duplicates and linked to another duplicate! This can lead to long chains (I think the longest i've seen is 5 or 6, but Flag answers that only link to a duplicate questions answer? is the one that showed up when I was writing this question.) Shouldn't we just mark things as one common duplicate, or go back and look for all the dupes marked as dupes of dupes, or could we do it programmatically, or is it better for SEO or anything to have it be a duplicate of a duplicate, or does it just not matter.