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Study advertisement. U.S. companies spend about $135 billion a year on advertising. To be a wise consumer, you should learn how to read advertisements. Most advertisements are one of two types. Rational advertising attempts to convince you with facts and information. It tries to persuade you that you should choose a specific product because it's the best one for you purpose. On the other hand, emotional advertising appeals to you feelings. Emotional advertising might suggest, that if you buy something, you'll be the most popular person in town.