Type of advertising which is particularly common in newspapers, online and other periodicals which may be sold or distributed free of charge. Classified advertising is called such because it is generally grouped under headings classifying the product or service being offered (headings such as Accounting, Automobiles, Clothing etc) and is grouped entirely in a distinct section, which makes it distinct from display advertising. Display advertising typically contains graphics or other art work and is more typically distributed throughout a publication adjacent to editorial content.