Powerline Networking integrated into charging systems …
It seems to me that powerline networking would be best implemented if it were integrated into the power supplies, and charging systems, of home computers, laptops, and other computing devices. This way they would just work when I plugged in to charge the batteries or power the devices. If all home computers had this, then it would seem to be a valuable service. If the laptop chargers had these networking solutions, then airports, etc. could just provide access via the power in their facilities that is being used by passengers anyhow! This might then offer some competition to other wireless solutions …

Powerline Networks Finally Viable? [Slashdot: News for nerds, stuff that matters]