There are many ways to promote a business. Some ways are more effective than others, but sometimes it is hard to decide which is the best way until you try out various strategies. Many reputable businesses use business cards, because they claim that it is an excellent way to increase the awareness of their company and a good way to retain customers. I think that the success of this type of promotion might depend on costs. Some business cards might be expensive, but there are also some cheap business cards out there if you look long enough. Overall, those who receive your business card can have access to your phone number or address, and this way there is a bigger probability they will conduct business with you. If a person will keep your business card in his wallet, each time he will look at it, he may be tempted to use your services, which will increase your long-term income. There are countless designs of business cards, so it might take some time to find the best one. I do not think that a person should solely rely on business cards to promote his business, but is some circumstances it might be worth considering using them.