Originally Posted by
drminn
You need to look at the conditions, is it for purchases or for balance transfers or both. For balance transfers there typically is a one time fee (3% or 5%). You then make the minimum payment every month. It won't hurt your credit score unless you run up the utilization, I just took a 25 point hit for running up the utilization on my new Hyatt card to 60% to make the minimum spend. But even if you do get hit, it will go away as you pay down the balance.
I feel like paying more than the minimum (if possible) would help prevent any issues, especially with store cards. For example, if you have a 12 month 0% APR offer, take the amount you'd charge to the card and divide that by 12 to get the amount you should pay. Then again, I'm loathe to pay any interest at all if I can avoid it.