In recent years, text and media linguistics have focused on genres in the new media. This is almost always accompanied by the question of the establishment and development of such content. Due to the diversity of genres and their dynamic development one can speak of an almost inexhaustible field of research. The book is located in this field of research. Its goal is to examine the origin and nature of readers’ comments by readers of French and English popular science magazines. Media content is dissected by using text linguistic tools. Transmedial cultures are explored across time, platforms, languages, and editing houses.