Earlier this year, as cellular broadband started to really take off, we put the Vodafone 3G USB Stick to the test. This quickly became one of our most popular reviews, and its accompanying YouTube video (below) has had many thousand of views. However, contracts don't suit everyone which is why Vodafone have just announced their PAYG version of this modem. For a limited time the £49 device is shipping with a free £15 credit, effectively making it just £34...