Nice article. I can fully recommend 'home plugs,' networking over the existing power supply. I purchased the Wi-Fi/Ethernet sets which are the more expensive but worth it, for example I can walk into the office outbuilding nearly 200 yards away which is connected to the supply from the house, switch on the 'plug' and still wander 40 yards off from there say into the garden. Cheapest and easiest way I found to do it.
Excellent article........a must for hardware guys as well who set up home or SOHO wireless office networks.