voteearthThe GreenTech section of cnet news today puts a tech spin on Earth Hour, when individuals, businesses and even cities are being encouraged to join together to “Save a Watt and the Earth.”

They describe Earth Hour as “sort of like open source movement against global warming.”  Adding that tomorrow (Saturday, March 28) at 8:30 P.M. millions of people in thousands of cities will turn off the lights for one hour to raise awareness about the link between global warming and energy use.

One day before the start of the event in Asia, “Earth Hour” is the top search item on Twitter.

If you’re planning on participating in Earth Hour tomorrow, you may want to start before you leave the office today.  A study published this week calculated that $2.8 billion is wasted from office PCs that aren’t shut off properly.