Big Brother is watching you, and you'd better remember. Forget for just a moment and you could find yourself committing thoughtcrime doupleplusquick. Enter the £49.99 ($78) Blink Now. It's ostensibly a device designed to save you from Computer Vision Syndrome, a modern affliction that causes headaches and blurry vision among those who spend a little too much time basking in the glow of a CRT or LCD. But, we're thinking its purposes are rather more nefarious. It's basically just a little LCD that you hang in your monitor and connect via USB. It presents an eye, always looking at you, lazily and nonc