Yes, I think there's a lot of noise and not all founders do much to contribute. :)
I don't remember if @skairam asked this in the Reddit, but in my earlier paper on wikis I asked how many contributors they thought their wiki would get. I never published it, but there was very little correlation with the actual size a year-ish later. I was actually surprised that the founder actions had as strong as a relationship as they do.
I wonder if "early leavers" is a category of users we should pay as much attention to as "early adopters." What is a tool or service you left early? #UX#UXdesign