Joi Ito takes a deep dive into digital identity.
So as we think about FOAF, cameras pointing at my face, location moblogging, it is essential not to forget that WE need to be in control of what information we create and how this information is tagged stored and authenticated. Peer-to-peer / end-to-end thinking is essential for privacy as well. Make client software that collects information from catalogs and locally recommends stuff to you, not central servers of user profiles. Empower the people, not the merchants and the governments.