Long term investment. Just because they are out of stock of Kinect it doesn't mean they should stop advertising their product. Not all people will buy it at launch or buy it immidiately when they saw it on TV. Advertisement is not just to make you buy the product but to be aware of the said product.
Was there ever a time frame given on that $500 million, could be for more than just the christmas period
There is none I think. It could be for several months or for a year.