frankly, I don't think the demographic that is buying Macs (mostly college-aged kids) hasn't changed and won't simply stop buying Macs because of some ad campaign by Microsoft. Windows Vista sucked before it was released, it sucked when it was released, and it still sucks at the point when Microsoft is trying to bury it. Macs offer a very different user experience from Windows, and it's like saying a Chevy is better than a BMW because it's cheaper. They are two entirely different products that both happen to have a screen and a keyboard.