This book constitutes the refereed post-conference proceedings of 4 workshops held at the 4th
International Conference on Internet Science Thessaloniki Greece in November 2017: the
Second International Workshop on the Internet for Financial Collective Awareness and
Intelligence IFIN 2017 the International Workshop on Data Economy 2017 the International
Workshop on Digital Technology to Support Social Innovation DSI 2017 and the International
Workshop on Chatbot Research and Design CONVERSATIONS 2017. The 17 full papers presented
together with one short paper were carefully reviewed and selected from 27 submissions. The
contributions of the IFIN workshop focus on a multidisciplinary dialogue on how to use the
internet to promote financial awareness and capability among citizens whereas the papers of the
Data Economy workshop show how online data change economy and business. The aim of the DSI
workshop was to collect the lessons learned from different platforms and settings and to
understand the requirements and challenges for building and using digital platforms to
effectively engage broad participation in the social innovation process. The papers of the
Conversations workshop explore the brave new world of human-computer communication through
natural language gathering latest developments in chatbots research and design.