The Pepsi-versus-Coke advertisements  have given people a strong impression. But will people really think coke is lower than the Pepsi from what the ads implied? Maybe not. Pepsi satired Coke in the advertisments to make the ads become more interesting and attract more customers. This is Pepsi’s marketing strategy to promote its products, however it is disparaging it’s competitor. Ethical business is needed in the modern world. Although companies can make money through lower their competitors, the ethical things are more important than the money. Walrmart is doing the same kind advertisment now. The ads itself actually doesn’t has any problems, but this method make us think more about ethical business and how to make money more morality. Whatever you do to your competitors cannot comopare with what you change yourself.