[stevear]

In order for this to work you have to get the balloon high enough where it won't be affected by simple weather patterns.

Then you have to make the device capable of withstanding extreme conditions.

Then you have to make the balloon stay in position.

Then you have to swap out the balloon's every X day to refuel and recharge.

Predicting the future here: they will make a balloon and radio system that works for about 20 minutes before it drifts off and then realize there is a whole lot more to putting computers in the sky than just announcing you are going to move your data-center into the sky.