Spam e-mails consume 20% of companies' energy budgets, enough collectively to run 2.4 million houses, says a study commissioned by the security firm McAfee. Most of the waste results from end users sifting through the 62 trillion junk items sent annually, eWeek reports. Eliminating spam would be the equivalent of taking one car off the road for each 200 employees in a 1,000-person company, according to the report..
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