The genius of Digg

"The genius of Digg is that it packs a simple user action with the maximum social intent. A digg is a single click--about as simple as it gets--and yet it's the central component of the community... Somewhere in there is a lesson for a start-ups wanting to harness collective intelligence. (If you're accustomed to more traditional ideas about community, there's also something strange about a group whose identity revolves around pushing a button.)" /Atomiq/