I remember vaguely in the past that there was a networking device that instead of using cables it ran through the power lines in your house. E.g. you just plug it into your pc via usb or whatever. Attach that to the receiver then from the receiver to a wall socket which then searched for another receiver somewhere else! I think this is an excellent Idea but for the life of me I cant find where to buy them.
Anyone know what they are?/Where to get them?