A solid marketing plan that is constantly reinforced is one of the keys to long term survival. Knowledge management is harder than it looks. There are no experts in knowledge management. Everyone is still focused on the basics, and that is pretty darn close to information management. What works is dependent on each individual organization and, similar to any other technology implementation, KM won't work unless your people are asking for a solution to collaborate and share knowledge.
Team work is essential.
We cannot do it all ourselves. Those talented and knowledgeable people that we surround ourselves with and pay lots of money to are there for a purpose. Listen very carefully to what they have to say and allow them to fulfill their roles in the organization. No doubt you have your own benefits of hindsight to share.