If you believed all the fuel cell talk that's been bandied about in press releases over the years you'd have thrown away your plug-in chargers by now and started squirting alcohol into all your gadgets. Many promises have been broken, so please take this news of a supposed $30 fuel cell charger for cellphones and other mobile devices with a suitably large chunk of salt -- or some sodium-free flavor enhancer if your doctor has imposed such dietary restrictions. Scientists at the
