It is believed that advertising aids companies in reaching prospective customers who are capable of becoming purchasers of products or services from an organization. As customers might not know too much about brands, advertising assists potential customers in deciding which product or service to purchase. For example, Nike becomes popular to the youths around the world who are the target audiences by keeping them well-informed about it through many advertising campaigns. In the past, we didn’t know how to advertise, many products were unknown, and we might buy products which are of bad quality. If we do not have advertising, we will have difficulty choosing which product or service is the most suitable for us. Actually, it does not only assist firms in reaching prospective customers but also helps companies gain more customers by word of mouth.