It works the same way that homeopathic medicine, therapeutic touch, reiki, healing crystals, feng shui, dowsing, magnetic bracelets, talking with the dead, and about a zillion other psuedo-scientific devices and practices: by preying on a combination of need, hope, and credulity.

Quote Originally Posted by atilla_the_fun View Post
What exactly is the theory behind this?? How can a plug in adapter clean "noise for the entire electrical system, and not just things downstream of it?