i'm so bummed i didn't know that. i've been buying this book for 12 years, and was really saddened when aa stop putting coupons in the book 3 yrs ago. now i coulda been using the continental coupons the whole time. aargh! they were much more flexible with fares you could use, as well as being able to upgrade the tickets. that's why they're still my favorite airline. continental is so tight with upgrades on int'l tickets it makes me sick!!