Professor of Information Science @ Humboldt-Uni Berlin working on philosophy of information, information ethics, and definitions of information, usually for an info science audience. Empirical research topics include human-computer interaction, personal information management, information organisation and retrieval, and bibliometrics. PhD and MLIS from McGill University, MA (philosophy) from King's College London. More publications on Google Scholar: https://scholar.google.ca/citations?user=9_wnKjkAAAAJ&hl=en