Save electric energy?

We all know that electric will became more expensive next year. So how can we save energy?
Most of us use LCD screen for our computer. LCD use most energy when the screen is white about 74W, but when is black it use only 54W.
Most of the Internet users use Google, so people complain about this energy spending so Google create http://www.blackle.com/
This is black Google.
But this black colour is not so good as white for our eyes, so you decide save energy or eyes :)