I've been looking for a description of K-Collector, as I have heard a number of people talk about it, including its creators. Matt calls it a Knowledge Centrifuge
I imagine K-Collector as being a kind of knowledge centrifuge, spinning together all kinds of different bits of information and separating out the good stuff for you.
Oh, and they have recently release it to the public, so there is some more information on the K-Collector website, which says:
k-collector is an enterprise news aggregator that leverages the power of shared topics to present new ways of finding and combining the real knowledge in your organisation.