This is interesting and entertaining to watch, five years ago seems exceptionally far. The topic is Web 2.0 and collaboration, includes Bill Gates and a few other CEOs:
Collaboration - The relative of innovation in continual redefinition and the understanding of it being as expansive or as limited as the knowledge of the descriptor, currently enjoys large number of white papers, Web 2.0 applications, etc. written in its praise and dismissal.
This video from Davos 2007 is a good discussion to highlight some of the considerations associated with Web 2.0 based Collaboration.