The problem with your theory of post quality corresponding exactly to magnitude of sum of votes for a node is sub-optimal. It may be, for instance, that Bob posted the same reponse or quesiton Jon is about to two years ago on Christmas Eve, and nobody noticed so it got no readership nor votes to speak of. Wheras Jon, posts on a dreary winter Sunday afternoon (or Friday afternoon around 3-5PM ;-).

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I'm not belgian but I play one on TV.