That's an odd choice considering that Chrome is perfectly capable of learning your PC's location (as long as you allow it). Perhaps there's some technical issue that prevents Google Now on the desktop from acting independently of your mobile devices... or perhaps Google Now on PCs is just a way to encourage you to use Google Now on an Android or iOS device.
Whatever the reason, it's nice to see Google Now finally showing up on the desktop. We'll be looking forward to how this feature develops as it winds its way to the stable build of Chrome and how it works in the new Chrome OS interface on Windows 8.
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