- Advertising has deep historical roots, with some scholars suggesting that ancient etchings and papyrus scrolls contained advertisements and lost-and-found notices. In its more modern forms, advertising stretches back to the development of the printing press in Europe. Handbills began to be funded by local advertisers as early as the 16th century, and the printed periodicals of England likewise began to incorporate advertising throughout the 17th century.
- The kinds of advertising have become more and more varied, especially in the last half-century. Billboards dot highways across the country. Television and radio feature both commercials and infomercials to fund programming space. Magazines and newspapers sell space to advertisers. Internet websites profit more and more from incoporating the same concepts. Newer forms of advertising include so-called "covert advertising" in the form of product placement in movies.
- Advertising is based on a very simple premise: companies or nonprofits want to get the word out about their products or services. Societal values, pop-culture references, celebrity endorsements, humorous scenarios and other effective ideas bolster the image of the product or service in question.
- Advertising involves a symbiotic relationship between the advertiser and owner of the advertising medium. The advertiser enjoys the public recognition of its goods, while the owner of the advertising medium is paid in proportion to the estimated market value of the ad space. It is highly contested how much advertising affects people's choices and behavior, but the general consensus is that advertising makes an impact.
- Billions of dollars are spent annually in the United States in TV advertising. Some of the most expensive advertising spots are featured during the NFL's Super Bowl. While television advertisements remain very popular, Internet advertising is the fastest-growing advertising medium. On the Google search engine alone, advertisers spend millions each month for ad placement next to search results.
