Spam is nothing but rubbish lying in our inbox, waiting to be deleted, however if you count the impact on the environment, amounts to a staggering amount of CO2, contributing to global warming. The security firm McAfee released a report titled 'Carbon Footprint of Spam' (registration required) based on study by climate -change consultants ICF International.
The Carbon Footprint of e-mail Spam report estimated that 62 trillion spam emails are sent globally every year.

This amounted to emissions of more than 17 million tons of CO2, the research by climate consultants ICF International and anti-virus firl McAfee firl. Searching for legitimate e-mails deleting spam used 80% of energy. The study found that the average business user generates 131kg of CO2 every year, of which 22% is related to spam. Having a spam filtering solution in place could eliminate over 75% of the energy lost. It's highly unlikely for spammers to change their ways on knowing the damage their actions are causing to the environment.

Let's take as an example of digital-carbon- footprint which, scientist’s school look next.
Facebook: ComScore says 200 million people logged on to Facebook in December 2008 to check out photos, enter status updates, play Mafia Wars and answer endless mundane quizzes. Facebook may connect friends, but how much carbon is that zombie army of yours really spewing into the atmosphere?
What about online Pranks? Hackers are rumoured to be manipulating Time.com's poll to determine the world's most influential people. Take a close look at the top 10 you'll see it spells out 'marble cake’. One hacker has already voted 10,000.00 times and another plans to run an entire server dedicated to manipulating the Time poll. Can we blame these hucksters for the meltdown of polar ice caps?

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