A federation is an association of organizations that use a common set of attributes, practices, and policies to exchange information about their users and resources in order to enable secure, authenticated collaborations and transactions. In a sense, a federation is like a village, but it is not geographically defined. In Internet2, we now have global federations of scientists, artists, and students working on joint projects. I believe that in the future, trusted communities and federations will enable Internet users to receive only the information they want, and because communication must be authenticated, all unwanted information can be easily traced back to its true source, eliminating the anonymity of spammers and scammers.

Indeed. Trust, reputation, and credibility will be the keys to greasing the wheels of everything. Unfortunately, I don't see them gaining traction without weakening privacy and liberty.