One of the most exciting areas of make believe computing is the mythical tablet PC. Apple has been rumored to be developing a tablet PC whilst Microsoft is supposedly developing a Tablet/booklet PC. Now OLPC, the project that designs low cost computers for kids in developing companies, has stepped into the arena not once but twice. First with a Booklet style, dual screen, tablet PC and now, after canning that idea, an ultra thin tablet screen with thumb/finger ring grip that supposedly will retail for around US$75.00 (pictured). The device is also rumored to include a digital camera on the back What caught my eye about this device is the image on the right. Nothing particularly revolutionary here but for some reason I'd never considered a touch screen, full size, keyboard before. It's not a new idea by any means and I have seen it on other touch screen devices (like mobile phones) - just never linked the idea to tablet PC computing. The concept gives me some confidence that...