Steve rightly observes competitive changes coming from phone-based operating systems, but strangely he doesn't include Apple: I assume we're going to see Android-based, Linux-based laptops, in addition to phones. We'll see Google more as a competitor in the desktop operating system business than we ever have before. The seams between what's a phone operating system and a PC operating system will change, and so we have ramped the investment in the client operating system. That's an astute observation and right direction for investment. Apple is there already, though, with close alignment between Mac OS X on the desktop and mobile derivative for iPhone.