This book constitutes the refereed postconference proceedings of 4 workshops held at the 5th International Conference on Internet Science St. Petersburg Russia in October 2018ampampnbspWorkshop 1 Detecting Social Problems in Online ContentampampnbspWorkshop 2 CONVERSATIONSampampnbspWorkshop 3 The Future of Decentralized Governance A Workshop on EncryptionBlockchains and Personal Data andampampnbspWorkshop 4 Internet as an issue An international workshop on governmentand media narratives.ampampnbspampampnbspThe 20 full papers presented together with 4 short papers were carefully reviewed and selected from 38 submissions. The contributions of the Workshop 1 Detecting Social Problems in Online Content has united Russian scholars who work upon Russianlanguage datasets.