This document provides instructions for tweeting the energy usage data from a Current Cost meter using either Linux or Mac OS X. For Linux, it involves installing Ruby gems, running a daemon program to stream tweets. For Mac, it involves installing drivers, using Pachube to send the data and then tweet it, as the Ruby code did not work directly on Mac. The process involves setting up the meter, signing up for Pachube, downloading apps to send the data to Pachube and then tweet the readings.