ECDL 2005 is the 9th conference in the series of European Digital Library conferences. ECDL has become the major European conference on digital libraries, and associated technical, practical, and social issues, bringing together researchers, developers, content providers and users in the field. ECDL 2005 is jointly organized by the Vienna University of Technology (VUT), the Austrian National Library (ONB), and the Austrian Computer Society (OCG).