I just saw the velvet jcrew blazer in olive green, my size on sale online. I could get an extra 10% off plus free shipping if I sign up for their card. Is that a stupid thing to do? Does it ruin your credit if you have too many cards or get too many credit checks? The jacket would end up being 20.00 as opposed to 43.00. I would not buy it at 43.00 but do not know much about the cons of getting another card. Any ideas?.

Thanks!!!