We knew that spam e-mails drained our time, resources, and productivity, but apparently spam is also contributing to global warming. Security-technology company, McAfee, and the technology-research company, ICF International, have just released a joint study that claims that the 62 trillion spam e-mails sent in 2008 generated approximately 33 terawatt hours (TWh) of energy per year. To put that in perspective, the study states that is the “equivalent to the electricity used in 2.4 million homes in the United