The Common Data Project is exploring new ways to model the data and privacy relationship between service providers and user. Our mission is to establish a "datatrust" that safely broadens public access to sensitive personal information for re-use in research and policy-making. We believe that public access to the rapidly growing stores of privately held personal data is crucial to a healthy democracy, informed policy-making and intelligently regulated markets. Areas of research include: Policy arguments for the Datatrust. Fair-Trade Data and the Privacy "Food Label." Accounting practices for measurable and verifiable privacy guarantees. Self-Service Map Anonymizer.