You can complete free offers or CC offers and you can make so much money. That's right, you receive real money everytime you complete offers(even free ones). You can also complete Surveys/Signups/Trials and more(shopping). They pay by Check or Paypal.
All you have to do is create a junk email (gmail,hotmail..) and complete free offers/surveys/signups, at that point you don't even need a credit card. After if you want you can complete credit card trials/offers and you can start making LOTS of money.