clipped from: www.knowledgeboard.com   
One that concerns Prusak is the unit of analysis issue. In other words, what do we focus on when working with knowledge? Should it be the individual, the group, the enterprise? And what specifically can we do with knowledge within one of these units in terms of measurement and specificity?
More people having more opinions and the means to broadcast them can be very beneficial in many ways but can also just add immense amounts of junk to everyone's lives. This is a big issue that organisations will have to face,"