Gatekeeping (communication) - Wikipedia

Gatekeeping is the process through which information is filtered for dissemination, whether for publication, broadcasting, the Internet, or some other mode of communication. The academic theory of gatekeeping is found in multiple fields of study, including communication studies, journalism, political science, and sociology. It was originally focused on the mass media with its few-to-many dynamic but now gatekeeping theory also addresses face-to-face communication and the many-to-many dynamic inherent in the Internet. The theory was first instituted by social psychologist Kurt Lewin in 1943. Gatekeeping occurs at all levels of the media structure—from a reporter deciding which sources are chosen to include in a story to editors deciding which stories are printed or covered, and includes media outlet owners and even advertisers. Individuals can also act as gatekeepers, deciding what information to include in an email or in a blog.

en.wikipedia.org/wiki/Gatekeeping_(communication)