How to Calculate Whether a Balance Transfer is Worth It
by Lisa Rowan on Two Cents, shared by Lisa Rowan to L from Lifehacker on (#4W1D0)
If you have more than one credit card, you've probably gotten offers to transfer a balance to one of your other cards-probably the one that gets used less than the others. Not wanting to be left out, that card sends you an offer of zero interest for 12 or 15 or 18 months, giving you time to pay down your balance"