However, even this is often not enough to be noticed in a modern city. Because of the advertising boom, people are used to seeing high standards of visual design. Modern advertisements must stand out in a world full of competition by combining the highest standards of design with ideas linked to the products to make them more attractive. For example, some advertisements may suggest that buying a car can make you free. That is, they use the concept of freedom to sell the car. Other common ideas include happiness, wealth and success. In fact, in the world of advertisements, such content is as old as advertising itself. For many of today's advertisers, repeating old ideas is not a successful approach. They realize that it does not matter how attractive the idea linked with the product is - most people know that the main purpose of the advertisement is making customers spend money. Instead, these advertisers look for other ways to make people notice their products.