Some people open up new bank accounts (cuentas bancarias) to take advantage of good offers. This is also true for new credit cards. If you are lucky enough to find them, there are credit cards out there that will give you the power to transfer balances for no interest. This means that you can have a check sent to you and you will owe no interest on that for a period of a few months. Over the course of time, you could invest that money into a safe savings account and make money during your introductory period. This is an interesting twist in how you should be looking at credit cards.