When Scott checked out at Kmart, a pretty sweet coupon printed out. What was it for? Thirty cents off per gallon (limit 20 gallons) at his local BP gas station! That’s actually a pretty good deal, and a nice Kmart/BP cross-promotion. Then he noticed the exclusions. Good coupons almost always have a lot of exclusions, so it’s smart to check them before heading for the newest BP. Scott didn’t expect the coupon to just cancel itself out, though. [More]






