Knowledge and people go together. Despite some rudimentary efforts in technological knowledge management, it's still true that most of an organization's knowledge is housed in people's heads. And, much of that knowledge is tacit--the people who know it, know it 'in their bones' and can't necessarily tell someone else what it is they know or how they know it.

Simply putting technology in place doesn't change anything unless the experts are motivated to put information into the system. Ways to do this include recognizing the expertise and rewarding people in one way or another for sharing knowledge.

Reference: KM and Human Nature in CIO