This document discusses false advertising and the ways companies engage in deceptive practices. It describes how advertisers use vagueness, conceal facts, and exaggerate claims to mislead consumers. Some advertisers also use "bait and switch" tactics where they advertise unavailable products to get customers to buy alternatives. The Federal Trade Commission works to prevent unfair business practices and deceptive ads through laws like the Pure Food and Drug Act, Federal Trade Commission Act, and Lanham Act.