Commercial speech, however, is less protected by the First Amendment than political speech, and is therefore subject to greater regulation. The Free Press Clause protects publication of information and opinions, and applies to a wide variety of media.
In computer networking, multicast (one-to-many or many-to-many distribution) is group communication where information is addressed to a group of destination computers simultaneously.
This article's factual accuracy is disputed. (March 2008) Narrowcasting has traditionally been understood as the dissemination of information (usually via Internet, radio, newspaper, or television) to a narrow audience; not to the broader public at-large. Also called niche marketing or target marketing, narrowcasting involves aiming media messages at specific segments of the public defined by values, preferences, demographic attributes, and/or subscription.