Another publication resulting from the annual National Methodological Conference of Media Experts and accompanying methodological workshops (VIII OKMM, 16-17 November 2017, University of Warsaw) has been published. This time, the conference, the workshop and the publication undertook analyses of the idea of apps and their functionality. This space of scientific exploration seems particularly relevant in times of progressive mediatisation of successive areas of life. Technological progress, globalisation, convergence and mediatisation are changing the way people perceive the world, and one of the key modern technological tools is the application. However, the word application - despite its frequent use - is not defined unambiguously, and the dynamically changing functionalities of applications create not only new opportunities, but also new threats for users. Therefore, undertaking a scientific reflection on these modern tools seems useful and interesting.

The texts included in the volume "Communication in the world of applications" (edited by T. Gackowski, K. Brylska, M. Patera; reviewed by Dr Bartłomiej Łódzki from Wrocław University and prof. Robert Cieślak from University of Warsaw) can be divided into two groups. The first one consists of articles related mainly to the functionality of applications and the possibilities they create for communicating with people and institutions (applications as a platform for promotion and persuasion, but also as a tool for collecting data). The authors of the second group of texts focus primarily on the users of applications - mainly young people, students, who not only use this tool intensively, but also have quite specific opinions and judgments about it.

The collected texts prove the multithreading and complexity of the issue, which is the use of applications by contemporary media users. At the same time they illustrate how much more work needs to be done in this field and how difficult it is - conceptually, methodologically and technologically - to undertake systematic research on applications as tools of communication. We hope that the book "Communication in the world of applications" will fill at least a small part of this gap and encourage discussion and further analysis in this area. We invite you to read it!