Only had a quick skim through the article but it does seem to be done pretty well.

The people that claim the whole double blind testing method is flawed have some bizarre arguments. Like you need to break them in for a certain number of hours before they'll work to their full potential and unplugging/replugging loses the "magic".

I concede that interconnect cables may make a difference if the stock ones you're use a little more than rusty barbed wire with a badly oxidised plug on each end but super special power cords are just crap. That last 2 meters from the wall to your device is nothing compared to the kilometers of cable between you and the powerstation. I'll go get the power company to replace all the cable with super expensive oxygen free copper which has been drawn by hand under a full moon on the top of Everest by a Buddist Monk who only does this once every 50 years