The holiday shopping season is officially upon us, and since Hanukkah starts very early this year (November 27), shoppers are expected to be out in full force from now till Christmas. If you're brave enough to join the masses at your local department store or shopping mall, you're sure to encounter more than your fair share of cash register credit card offers. That's when the helpful attendant ringing up your purchases excitedly informs you that you could save 10, 20, even 25 percent on today's purchases by obtaining a store card right now!