Cheerios Coupons

This is a great one!  Go here to register to get 4 $1 off one box of Cheerios.  After you sign up there is a page that tells you this...

Thank You for signing up.

Over the coming weeks you will receive 4 emails each with a $1 coupon.
If you win a free box of Cheerios^® cereal, you will be notified by mail
in the next 6-8 weeks.