This Article is principally concerned with a subset of Electronic Health Records (EHRs) known as personal health records (PHRs). As the George W. Bush Administration's national EHR project lost some of its momentum due to technical and financial barriers, interest in this more modest, atientcentric model has grown. Mark Rothstein's observation that "the private sector is racing ahead" was confirmed by the 2008 launches of Google Health and Microsoft's HealthVault, and the considerable press attention they attracted.