Online community is a really interesting thing – Joel Spolsky has written about it, but he misses a larger question: why does livejournal succeed where others have failed? How the heck did http://everything2.org develop such a rabid fanbase? Why is it now gone? Does http://wikipedia.org encourage a vibrant community? What are the technical decisions that drive the acquiring and losing of that ephemeral feeling of community?

In my old idea bin, the most informative comment got lost in the shuffle. Someone named bpt said

Regarding the relationship between technical decisions and possibility of community growth, see:

http://www.emacswiki.org/cw/WhatIsAffordance

http://www.emacswiki.org/cw/SocialAffordance