UK mobile network GiffGaff offer some deliciously tempting data-only deals which are perfect for using with Chrome OS. With a trip coming up I need to have 'on the go' internet access so I can work. So I've decided to take my 3G-toting Samsung Chromebook Series 5. But how do you set-up GiffGaff 3G to work with a Chromebook? Is it even possible? Thankfully it is...