The document outlines 10 challenges for the ePortfolio community to address issues around interoperability and adoption of ePortfolios. The challenges include developing: 1) a universal ePortfolio repository to provide a unified view of all digital assets, 2) universal competency identifiers to share competency definitions across systems, and 3) ePortfolio social networking capabilities to share assets and knowledge across communities. Addressing these challenges would help create more open and trusted ePortfolio platforms and services.