The iPhone 3G has been voted Gadget of the Year by readers of Stuff magazine, says Reuters. The device beat out a number of rivals, including Microsoft's Xbox 360 console, the Wii Fit add-on from Nintendo, and B&W's Zeppelin iPod speakers. Products were rated in categories including performance, design and value, as well as "cool factor;" in this regard the iPhone 3G is described as a "faster, c