ptorrone writes: "Open source hardware company "Adafruit Industries" has released a "Tweet-a-watt" kit. It's an open source power monitoring kit that mods an off the shelf power meter which can "tweet" (publish wirelessly) the daily KWH consumed & Cumulative Killowatt-hours to your Twitter account, Google App Engine, Facebook, IRC, whatever... They recently won the "GreenerGadget" design compition and have now released an open source hardware kit."
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