Part of the problem here is that any open [web] community will eventually contain more people who've joined after you than people who joined before you. Consequ

Part of the problem here is that any open [web] community will eventually contain more people who've joined after you than people who joined before you. Consequently, stuff you learned long ago is still new and interesting to the majority of the population. I had a interesting discussion with @ColinWright a few months back about how you might design a forum based separate cohorts for each time period in which people joined, and on scoring each post separately within each cohort - if I had a few months to spare I would love to try building & launching that. Sadly, I don't.