Powerline devices don't work with each other: This is preventing the kind of growth predicted a few years ago as newer devices that use home electrical wiring as a network media were to hit the market. With specs like that of the HomePlug Alliance offering speeds of 200 Mbps, you'd have expected something to coalesce around a dominant flavor. Instead, you have chipmakers each pushing their own solution. This year's CES doesn't seem to offer clarity. Nancy Gohring reports for IDG News Service that the dominant retail manufacturer NetGear is actually unhappy with the lack of interop because it's stifled the market as a whole of which they'd like to have a piece.