John McDowall asks whether Mapping Relationships is the next big step forward in knowledge management (via elearnspace)
He looks at the work that Ross Mayfield, Semaview and others have done in developing workable mapping tools and techniques
I feel that this is a sign the next wave is coming and its foundation is in the move from unstructured to structured information. Blogs are one of the key platforms for moving from unstructured to structured information. They are providing a rich ecosystem to experiment with various structured data and metadata technologies.