Microsoft Rally Ball demo shows Windows Phone 7, Kinect, Xbox Live living in perfect harmony (video)Microsoft Rally Ball demo shows Windows Phone 7, Kinect, Xbox Live living in perfect harmony (video) Though it's billed strictly as a technology demo -- not something we'll necessarily see in any imminent over-the-air update -- Microsoft showed off a pretty cool demo of how Windows Phone 7's Xbox Live integration could take advantage of Kinect down the road at Steve Ballmer's MWC keynote today. Ho
