"People who think of themselves as capable of creating as well as consuming are different kinds of citizens, and our collective actions add up to a different society."

-H. Rheingold

• participation. rocket fuel for smart collaboration.
  
• agility. speed. flexibility. getting shit done.
• momentum. communities want to push boulders that are already rolling.
• testing and rapid prototyping. iterating and refining as we go.
• leverage. getting greater bang from limited resources. punching above our weight.

"When you put it all together, the story become clear: an outsider makes one edit to add a chunk of information, then insiders make several edits tweaking and reformatting it. In addition, insiders rack up thousands of edits doing things like changing the name of a category across the entire site — the kind of thing only insiders deeply care about. As a result, insiders account for the vast majority of the edits. But it’s the outsiders who provide nearly all of the content."

http://www.aaronsw.com/weblog/whowriteswikipedia