That sounds like an interesting starting point for an academic paper on community interaction. Many of those metrics could be gamed if they were the 'goal' of a

That sounds like an interesting starting point for an academic paper on community interaction. Many of those metrics could be gamed if they were the 'goal' of a particular site, though before they're gamified they do sound like an interesting way of filtering through repos to find examples to talk about how communities function (or not).