Business cards should be a conversation starter, the subtle rounded edges on these cards will truly help you be remembered. Business cards! an instrument bearing business information about a company or individual exchanged during the personal or professional meeting. A business card is brief itroduction about business. People often prefer some simple and attractive business cards for their profession. There are different catagories in business cards like square busines cards, round corner business cards, plastic business cards, metal business cards and so on.