In the basis of a special area of genre PRology as a branch of the science of public relations the authors put the criterion of the diversity of PR-information in multi-channel public communication via new media. As a subject of genre PRology, the authors consider convergence of information formats of a PR text in a multi-channel PR. In the genre revision of PR communication in social media, the genre transformations of PR texts are influenced by the following factors: 1) technological, 2) intentional, 3) structural.