If you are looking for a safe investment or some extra money, be aware that pyramid schemes are not the way to go. Pyramid schemes don't sell products - they sell false promises. Examples of pyramid schemes may include chain letters, mailing lists and moneymaking clubs. They're usually illegal but are often advertised through newspapers, the Internet and 'investment' seminars or you might hear about them through a relative or friend.
Every pyramid scheme depends on an endless supply of new members.
In a typical pyramid scheme a potential member is asked to pay to join the scheme. The only way to advance is to recruit others, who also pay to join. If enough new members join, the pyramid grows, but in order for everyone to profit there must be an endless supply of newcomers. In Australia it is illegal to promote or participate in a pyramid selling scheme. Remember, if it sounds 'too good to be true' it probably is.