Call this Green Tuesday. There is also appealing simplicity in the energy-saving approach of D-Link with a new line of networking routers: They can power themselves down when not needed.
Among other energy-saving features, the router can shut off the wireless when it isn't needed. The feature is found in software in the "D-Link Xtreme N Gigabit Routers" (whew...no savings in that name).
It's a bit more effort and unlikely to save much money. But why not?