How is Brightle saving energy?

I turn off the lights, the TV, the monitor, the PC, the AC, etc. when I am not using them.

Does the light colored screen really help?

Yes, a tiny bit. Most people use LCD monitors. Most LCD monitors consume less power when they display bright colors. You can find explanations of this if you search the web for "how LCD monitors work". In addition, the bright screen lights your desk.
However the difference that it makes is really negligible.
Always use reasonable monitor brightness levels to protect your eyes.

Do you really save as much energy as you claim to?

I believe so. It's a rough estimate of the amount of electricity that I personally save each day. You can find definitions of joule and electronvolt on the web.

Why Microsoft Live Search?

It looks pretty, it's easy to use, it does the job well.
And by avoiding Google we are saving even more energy. Google is so huge. Imagine how much electricity it burns to run its datacenters. Not really, just kidding.

Why did you create Brightle?

To make fun of blackle.com, of course.

Who are you?

Just a person.