1. Chain emails consists of a message  that attempts to induce the recipient to make a number of copies of the letter and then pass them on to as many recipients as possible.

2. A Chain Letter is a letter sent to a number of people asking each recipient to send copies with the same request to a specified number of others. The circulation of a chain letter increases in geometrical progression as long as the instructions are followed by all recipients.

3. A pyramid scheme is a fraud based on recruiting an increasing number of investors.  Also known as sometimes confused with MLM (Multilevel Marketing) or Network Marketing.

4. Because you don’t always know who the true sender is and if you do not know the sender then you should not open it because you don’t know what it is.

1. Because they say stuff about your life and the future and how it can become really good or really bad. And if you don’t send them to more people then something bad will happen to you so because people don’t want to risk it they send the chain letter.