The message by this year's campaign was to Vote Earth so that the governments across the world would address global warming effectively at the Dec 2009 Copenhagen climate conference. It surely was a successful attempt in creating awareness among the mass public and millions voted for the earth.
This link has a wonderful collection of the pics around the world. And ofcourse the official earth hour website
Thanks to Ragam most of the rooms at our hostels were dark and we did contribute. However the extensive lignthing during the fest would have had a negative effect!
I had plans to observe a similar event in the 3rd year under the IEEE Students' Branch banner but the other activities kept me too busy.
Sorry for a week's delay in posting :P