That actually sucks! Think Google will do anything about that anytime soon? Having adsense, adwords and checkout working together? With Adsense I can make money. With the money I've made, I could buy marketing campaigns on Adwords, and again make more on Adsense and Checkout. With the leftovers, I could buy stuff like ipods and mobile phones with Checkout. I could also use Checkout, to make even more money. I wonder why Google haven't made this possible yet. They are so wierd, in many ways.
I've been watching Google for several years. They listen to us, they read the forums and they make smart business decisions. I'm sure they'll do this eventually.