Enticing credit card offers fill the mailboxes of thousands of Americans every day. Accompanied by amazing offers of zero percent interest for six months and no fees for balance transfers, 15% to 20% off your first purchase, discount hotel rates and free movie tickets, the list goes on and on. And on impulse we fall to our knees and sign on the dotted line without thinking about just how much another credit card will affect our families, our credit histories, or our financial futures. Before you sign up for another card, ask yourself what is the rule of thumb for credit cards, just how many credit cards is enough? Do you know? Is there a magical number or is it just a matter of how you manage them? If your answer to all of these questions is I don