This Slashdot article pointing to a NYT article on Illumio is fascinating!
They plan to use a reverse-auctioning system and local computer software to identify experts in a social (or oganizational) system. This could be yet another sub-revolution in the IT world, a new way of doing things.
For example, if it works as described, it would be a new way to identify the true experts in an enterprise and a new means for them to be available for consultation.