For every friend you refer you'll receive 1 or 2 Referral Credits, depending on the type of subscription they choose. You may track the number of Credits you accrue on your 'My Account' page on our web site. When you accrue a minimum of 10 Referral Credits you may redeem them for a gift certificate at any participating online vendor. They're as good as cash! There is no limit to the number of Credits you can earn or to the amount of rewards you may redeem.