Incredible, the first comment on this article, spam from 4 years ago, uses the exact same wording as this current spam. THAT is persistence. If this kind of energy would have been devoted to actually mass producing and supplying the sort of cogeneration technology I mentioned in the article (from 2005) we would all be operating our computers on their power right now. As it is, only spam has been mass produced. Too bad. But DIY technology just might come through anyway.