Some people believe that advertisement is a waste of company's money and energy. Most consumers know what they need and don't pay much attention on advertisements, so the advertisement has little effect but cost too much. However, I disagree with the statement because I consider that advertisements have their own special use.
On one hand, advertisements can send useful and opportune messages for new products and new shops. When a new product comes into being or a new shop starts business, people can hardly know if there is not an advertisement about it. So, advertisement is necessary to propagate a new thing. It can be a useful promotion to tell all people to have a try on it.
On the other hand, people who know what they want to buy may not actually determine that which brand they will choose or where they want to go for purchase. Advertisement can help these consumers exactly. For instance, my sister wanted to buy a pair of new boots. She called me to ask which shoe store is economical. I just remembered an advertisement I see on the newspaper several days before. It is said that boots in "The Happiness Market" is selling at a discount. So I told my sister to go there and she did.
Anther factor shows that some interesting advertisements can make people happy and impressed them to be potential consumers. They will keep the brand and the product in mind. Some day when they need some similar products, they will choose to buy the product in the interesting advertisement. Even when their friends or relatives need those things, they can also an oral promotion for the product.
Actually, advertisement is so expensive that makes some company cannot afford it. Also, it must take much energy to create an impressive advertisement. But I think the money and energy pay for the advertisement is worthwhile for a company.
So, as I see it, advertisement is not a waste of money or energy but an effective method of sales promotion.