Shaspa's kits, due out later this winter, turn energy-saving into a social activity. Like Energy-
Hub, they can track overall energy use and turn off individual outlets. But they can also send stats to Twitter and Facebook, so pals can engage in friendly competition. Advanced kits even include 3-D software that lets you access them from virtual worlds like Second Life, letting you lower the thermostat with a favorite avatar.
Shaspa Smart Home $130–$500; shaspa.com