The editorial introduces the topic of this thematic issue, which is the important role of society’s media monitoring capabilities, i.e., to produce information about what media “do” to society, and more precisely for democratic development both the here and the now and in the longer term. The theoretical and methodological aspects of the thematic issue are presented according to the approach of an EU-funded project Mediadelcom, which aims to explain interconnections between the news media transformations and the risks and opportunities for deliberative communication. One of the stages of the project investigates media monitoring capabilities in different countries. The eight articles introduced in the editorial contribute to deepening the perspectives on the capabilities of media monitoring in the 21st century, and to understanding their function in detecting potential risks and opportunities for democratic public deliberation.