The MLM lead list is just a list of names and contact information. The people on the list are people who have expressed an interest in either learning about the MLM opportunity or buying the products the MLM business is selling.
It is not enough to have just a list, but a person needs a good list. A good list is going to have verified, quality leads. A verified, quality lead is a person who specifically requested information on the MLM company or products and who is expecting and wanting to be contacted. These leads are the best because they hold the most potential to turning into a recruit or a sale.
The whole idea of an MLM lead list is to turn a profit. It is important to keep the list current and up-to-date. It should be refreshed often with new names.