You just received a credit card application in the mail. The credit card company offers 0% interest for six months, with no questions regarding your credit history. Before you sign up, consider the fine print that credit card companies may not want you to actually read. Why is the credit card industry sending out so many applications? As long as you are racking up debt, why not use a credit card that earns a percentage of your purchase for your favorite cause—AIDS relief, wildlife preservation, human rights, etc.?