The Jolicloud Jolibook. Oh yes, it's sounded like a made-up device ever since the pictures of it started to leak out, but the netbook centered around the Jolicloud Linux operating system is indeed a real product. So real that we've been using the Atom N550-powered system over the past few days. Sure, we've gotten looks in public because its cartoon-covered lid, but the £279 ($443) machine isn't meant for "grown-ups" -- its intended for a younger set, or those between the ages of 15 and 25. You know, those that tend to live in the Cloud. So, does the netbook have appeal be