Advertising is an audio or visual form of marketing communication that employs an openly sponsored, non-personal message to promote or sell a product, service or idea. Sponsors of advertising are typically businesses wishing to promote their products or services. Advertising is differentiated from public relations in that an advertiser pays for and has control over the message. It differs from personal selling in that the message is non-personal, i.e., not directed to a particular individual. Advertising is communicated through various mass media, including traditional media such as newspapers, magazines, television, radio, outdoor advertising or direct mail; and new media such as search results, blogs, social media, websites or text messages. The actual presentation of the message in a medium is referred to as an advertisement or "ad" for short.
It is sometimes argued that advertising really does little harm because no one believes it any more anyway. We consider this view to be erroneous. The greatest damage done by advertising is precisely that it incessantly demonstrates the prostitution of men and women who lend their intellects, their voices, their artistic skills to purposes in which they themselves do not believe, and that it teaches [in the words of Leo Marx] ‘the essential meaninglessness of all creations of the mind: words, images, and ideas.’ The real danger from advertising is that it helps to shatter and ultimately destroy our most precious non-material possessions: the confidence in the existence of meaningful purposes of human activity and respect for the integrity of man.
Paul Baran and Paul Sweezy, 1964