Apparently if you want to make money from writing an iBook the best type are free energy machines. More people will pay for $25 for a free energy scam than anything else. At least one of them actually works! Extracts electricity from all the RF flying around. Produces 7V, according to a mate of mine. I asked him what the current was. He said they didn't specify that. I told him that if it did work (and it would be free energy) there wouldn't be enough current to run a digital wristwatch. Unless it was absolutely huge.
