Free Keebler 100 Calorie Right Bites white fudge pretzels w/rebate.

Hmm, interesting. Here's a rebate for 100 Calorie Right Bites Keebler white fudgey pretzels, but apparently you need not only the usual UPC and receipt, but also some sort of special "rebate token" that's found inside the package. I'll be on the lookout for one of these in the store. Has anyone else seen this before? It's new to me...

"To receive your rebate on 100 Calorie Right Bites Keebler White Fudge Dipped Pretzels send one token from specially marked packages, original cash register receipt with purchase price circled, and completed rebate form. Maximum rebate of $4.00. Must be purchased by 08/31/12. Must be postmarked by 09/14/12. One rebate per household."