Kellogg's Promotions

Remember the good old days when the best thing about a new box of cereal was the prize inside? There are very few now days that have the actual prize inside. Most just have a picture with instructions of how "you too can have this prize".
Anyway I just found this site tonight for Kellogg's. There are many promotions listed that I knew nothing about. There are a lot of them that are free and just require a filled out form and the upc's from the packages, which is great if you usually don't hold onto your receipt. You can also check that status of a promotion that you submitted for. I was able to check the status of my $10 Rebate Check from them for the Fuel For School Promotion.