Privacy would not be a problem if we consumers were allowed to track ourselves and had complete ownership of our private data.
It would then be great if you could harness your own profile data to personalise every bit of digital content you get in contact with, from web browsing/searching, to mobile usage, to the adverts you see on TV and out in the street.
Corporations invest so much money into CRM systems, yet you only get the benefit of 'personalisation' from each company, whereas if you had your own data silo you could interface with everyone out there.
I'm glad this vision is shared by others.
Doc Searls already coined the term
VRM (Vendor Relationship Management) and started a community around
ProjectVRM.
I still think the biggest challenge is to convince the corporations out there that they can trust such a paradigm-shifting concept, and as a result stop trying to invade our privacy.