As we all know, communication has been playing an important part in people's life. As far as I know there are mainly three means of communication. Writing letters is one of them. People use it to exchange information and ideas. Slow as the mail is, it is the cheapest means of communication. The second is making phone calls. By using telephones, people can talk to each other even if they are far away. In 1946 the computer came into being. Communication by computer is fast and easy. In this way, people can send E-mails to each other.