Crowd-sourcing or Pro-sourcing?

"The wisdom of the crowds" is a popular Web 2.0 concept, but in a provocative Slate article/podcast titled "The Wisdom of the Chaperones", Chris Wilson cites studies of Wikipedia, Digg,  and other popular crowd-sourced sites to argue that all is not what it seems.  It's worth reading/listening, but here's the practical takeaway for successful NG implementation.

Attractive websites require intelligent and constantly fresh content, which many enterprises cannot quickly generate from the communities they are trying to engage or from their own employees. So using editors and writers, contracting with thought leaders as frequent contributors, and other similar investments should be evaluated. The chatter of the crowd is sometimes just no substitute for the work of professionals.