I signed up for a Cheerios mailing a while back and was pleased with the coupons I received. High dollar cereal coupons almost always mean that you can score cereal for under $1 per box when you catch a sale, making it a great donation item to food pantries and shelters. Here is the info from Money Saving Mom:
Sign up here for a chance to win one of 53,600 free boxes of Cheerios. Not only do you have a pretty good chance of winning, but you'll also get a coupon via email for the next four weeks with a $1/1 Cheerios coupon.