The Computing Unplugged Webzine is devoting a lot of editorial space to an issue they are just learning about...
The hams say BPL can both damage the radio spectrum and be damaged by it. The industry reps we've talked to say that was old tech -- the new stuff is better. As you'll see in our continuing coverage over the next few weeks, we honestly can't tell whether BPL is a good thing, or something that should be stopped in its tracks.
Read more about it on their web site: Computing Unplugged.