I doubt it's the main driving force, but the revelation that the new Kindles are ad-supported. It could be consumers have more faith in the Nexus 7 overtaking t

I doubt it's the main driving force, but the revelation that the new Kindles are ad-supported. It could be consumers have more faith in the Nexus 7 overtaking the Kindle Fire going forward. And at the same time, excitement for Amazon's new products.