every few months. But, while they're all happy to just kick back and tell you what a wasteful pig you're being, a new service from UK security company AlertMe could actually make you more efficient. Subscribers to the company's monitoring plans, which start at about $260 plus another $17.50/month, will be able to purchase Smart Plugs for $43 each that can communicate wirelessly to an AlertMe Heating Controller. From there subscribers can monitor their energy usage online via computer or phone. That's all standard stuff, but the service also includes keyfobs that will automatically turn down the heat and deactivate devices when you leave, and allows users to manually control the plugs and the thermostat by text message, meaning you'd never be more than a few thumb-presses (and a 20 cent service charge) away from a warm and inviting home.