Papers presented at 2017 conference on ethical values in age of social media, particularly on explosion of rumors, "alternative facts" and fake news. Explores types and uses of such information in various media contexts and their catastrophic effects in academe, politics, economies and societies. Suggests concept of "post-truth" to encompass these phenomena and explains its concepts and practice, its causes and effects, and possible measures to counter it. Edition limited to 100 copies.