Further Information: http://www.donau-uni.ac.at/cedem The CeDEM12 proceedings present the essence of academic and practical knowledge on e-democracy and open government in a nutshell. All selected academic papers, keynotes, short presentations and workshop summaries are published and mirror the newest developments and trends, in particular transparency and access to data, new ways of interacting with governments and democratic institutions and the profound changes in society due to such new tools and procedures.