Advertising, the techniques and practices used to bring products, services, opinions, or causes to public notice for the purpose of persuading the public to respond in a certain way toward what is advertised. Most advertising involves promoting a good that is for sale, but similar methods are used to encourage people to drive safely, to support various charities, or to vote for political candidates, among many other examples. In many countries advertising is the most important source of income for the media (e.g., newspapers, magazines, or television stations) through which it is conducted. In the noncommunist world advertising has become a large and important service industry.
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In the ancient and medieval world such advertising as existed was conducted by word of mouth. The first step toward modern advertising came with the development of printing in the 15th and 16th centuries. In the 17th century weekly newspapers in London began to carry advertisements, and by the 18th century such advertising was flourishing.
The great expansion of business in the 19th century was accompanied by the growth of an advertising industry; it was that century, primarily in the United States, that saw the establishment of advertising agencies. The first agencies were, in essence, brokers for space in newspapers. But by the early 20th century agencies became involved in producing the advertising message itself, including copy and artwork, and by the 1920s agencies had come into being that could plan and execute complete advertising campaigns, from initial research to copy preparation to placement in various media.
Advertising developed in a variety of media. Perhaps the most basic was the newspaper, offering advertisers large circulations, a readership located close to the advertiser’s place of business, and the opportunity to alter their advertisements on a frequent and regular basis. Magazines, the other chief print medium, may be of general interest or they may be aimed at specific audiences (such as people interested in outdoor sports or computers or literature) and offer the manufacturers of products of particular interest to such people the chance to make contact with their most likely customers. Many national magazines publish regional editions, permitting a more selective targeting of advertisements. In Western industrial nations television and radio became the most pervasive media. Although in some countries radio and television are state-run and accept no advertising, in others advertisers are able to buy short “spots” of time, usually a minute or less in duration. Advertising spots are broadcast between or during regular programs, at moments sometimes specified by the advertiser and sometimes left up to the broadcaster. For advertisers the most important facts about a given television or radio program are the size and composition of its audience. The size of the audience determines the amount of money the broadcaster can charge an advertiser, and the composition of the audience determines the advertiser’s choice as to when a certain message, directed at a certain segment of the public, should be run. The other advertising media include direct mail, which can make a highly detailed and personalized appeal; outdoor billboards and posters; transit advertising, which can reach the millions of users of mass-transit systems; and miscellaneous media, including dealer displays and promotional items such as matchbooks or calendars.
In the 21st century, with an intensely competitive consumer market, advertisers increasingly used digital technology to call greater attention to products. In 2009, for example, the world’s first video advertisements to be embedded in a print publication appeared in Entertainment Weekly magazine. The thin battery-powered screen implanted in the page could store up to 40 minutes of video via chip technology and automatically began to play when the reader opened the page. See also history of publishing; marketing.
For an advertisement to be effective, its production and placement must be based on a knowledge of the public and a skilled use of the media. Advertising agencies serve to orchestrate complex campaigns whose strategies of media use are based on research into consumer behaviour and demographic analysis of the market area. A strategy will combine creativity in the production of the advertising messages with canny scheduling and placement, so that the messages are seen by, and will have an effect on, the people the advertiser most wants to address. Given a fixed budget, advertisers face a basic choice: they can have their message seen or heard by many people fewer times, or by fewer people many times. This and other strategic decisions are made in light of tests of the effectiveness of advertising campaigns.
There is no dispute over the power of advertising to inform consumers of what products are available. In a free-market economy effective advertising is essential to a company’s survival, for unless consumers know about a company’s product they are unlikely to buy it. In criticism of advertising it has been argued that the consumer must pay for the cost of advertising in the form of higher prices for goods; against this point it is argued that advertising enables goods to be mass marketed, thereby bringing prices down. It has been argued that the cost of major advertising campaigns is such that few firms can afford them, thus helping these firms to dominate the market; on the other hand, whereas smaller firms may not be able to compete with larger ones at a national level, advertising at the local level or online enables them to hold their own. Finally, it has been argued that advertisers exercise an undue influence over the regular contents of the media they employ—the editorial stance of a newspaper or the subject of a television show. In response it has been pointed out that such influence is counteracted, at least in the case of financially strong media firms, by the advertiser’s reliance on the media to convey a message; any compromise of the integrity of a media firm might result in a smaller audience for the advertising.