Nowadays market economy is widespread all over the world.Some people think that to advertise means to let the customers know about your product.Maybe it was so many years ago.Today, in times of severe competition, a function of advertising is much more complex.You should not only let people know you should make them buy.In different forms, in different words you should convince everybody that your product is the best.So when such a problem appeared, advertising was transformed into a science.It was a mixture of management, marketing and psychology.But the large amount of ads all around began to aggravate people.And then the science was developed into the art of advertising.