Jane Greenberg, PhD, MS, is Associate Professor at the School of Information and Library Science, University of North Carolina at Chapel Hill, Director of the SILS Metadata Research Center, and was recently awarded a Frances Carroll McColl Professorship. She is the Principal Investigator of the Memex Metadata (M2) for Student Portfolios project. She is a member of the Dublin Core Metadata Initiative (DCMI) Advisory Board and a co-chair of the DCMI Tools Working Group. She regularly serves on national and international digital information and metadata conference program committees, and was program co-chair of the Dublin Core 2003 conference. Dr. Greenberg was the Principal Investigator of the AMeGA (Automatic Metadata Generation Applications) project and the Metadata Generation Research (MGR), collectively sponsored by Microsoft Research, OCLC Online Computer Center, and the Library of Congress. Eva Méndez Rodríguez, PhD, is Associate Professor at the University Carlos III of Madrid, where she has been teaching and conducting research since March 1997. She is a member of the Dublin Core Metadata Initiative (DCMI) Advisory Board, and served as co-chair of the International Conference on Dublin Core and Metadata Applications (Vocabularies in Practice) held in Madrid in 2005. Her research focuses on Semantic Web technologies applied to digital information systems and services, with an emphasis on metadata standards and vocabularies. In addition to the DCMI, Dr. Méndez has served on many conference and workshop program committees worldwide. She has also served as an advisor on information practice and policy for countries in the European Union and Latin America. Dr. Méndez was Fulbright-EU Research Scholar at University of North Carolina at Chapel Hill, School of Information and Library Science, Metadata Research Center, during the academic year 2005–2006.