Broadband over Power Lines

A check today of the Google News results for "Broadband over Power Lines" (aka BPL) indicated that a concept that I've been tracking for some time is becoming closer to reality. Two Texas companies have announced a plan to offer high-speed Internet service over the power grid (read more on c|net). This could be huge for making Internet access more widely available and affordable, as written about by the AP back in 2003. At the same time, some (such as David Coursey of ZDNet) have argued that this is a bad idea - mostly because of the negative influence on radio communication due to interference. I'm hoping that this pans out.