It's also convenient in that it takes advantage of the existing infrastructure if you're performing the communication with general purpose LED lamps, which are being rapidly adopted for their energy efficiency.
I think the coolest part of this would be if someone were to take it and combine it with a "standard" (I really don't know how standard it is) Powerline ethernet setup. Would make for a more reliable than wifi setup in some buildings while being easily compatible with existing hardware.
