Windscraper – building and power source in one?

Here’s a way of generating wind-power without building those (allegedly) ugly windmills all over the place – a skyscraper whose floors are rotated independently around a central shaft by the wind, construction of which is due to start in Dubai before the end of the year. Words really can’t do the idea justice, you’ll have to click through for the pictures and animations … while you’re there, you can check out the skepticism of the commenters, who have a good point – wouldn’t you end up being pushed toward the outer edges by centrifugal force?