At risk of adding more layers of comment (but hey thats knowledge creation )-worth citing Tony Karrer on Will Richardsons post – Web 2.0 as “Cultural and Intellectual Catastrophe”

The basic issue of experts vs. collective intelligence . Tony states there is the contention of whether collective opinion constitutes ‘authority’ , but he states “I do believe that there’s still need for expertise, review, authoritative sources. But there’s also a valuable place for the speed, breadth, depth and network in Web 2.0. “