[Josh Warner @ Aug 27th 2007 12:46PM]

If there was any question about it, this is completely bogus. Dielectric is the technical term they perverted, and it represents the stuff between the plates of a capacitor which impedes the flow of charge while resisting ionization; this improves efficiency, allowing higher operating voltages and/or smaller components with the same performance. Somebody wasn't trying very hard when they named this. See http://en.wikipedia.org/wiki/Dielectric

Now, they claim this will decrease the charge passed from plug to plug over - presumably - an empty outlet. No dice. By putting a plug in, you effectively introduce a (really, really bad) capacitor into the circuit in the form of two metal plates parallel to each other. The efficiency is terrible, but the important part is that it will actually increase the net current flow, contrary to the advertisement. Realize that we are dealing with leakage currents in the µA or nA, maybe even pA range here, so while this sounds bad it really will never be noticed either way unless you are measuring with lab quality equipment.