I think rebate credit cards are the best credit cards because you get something back for all your spending.  But I have never heard of a credit card that offers you a way to make an income untill now.

A credit card claiming to be an "income opportunity." Not just another rewards or cashback card, it offers a way to make hundreds or thousands of dollars every year -- automatically. Eufora Mastercard offers Three different levels, Associate, Preferred, or Elite. The annual fee  depends on which level you apply for $29.95 for Associate, $59.95, for Preferred $99.99, and $99.99 for the Elite.

When you get 10 people to sign up for the Eufora Credit Card, the Eufora credit card company says they will pay you between $200-$900 a year depending on the level the people signed up for.

For more information check out Eufora's web site right here...