OK, I realize I should let this thread close but figured I would throw in one more thing. I did order a LED light for my porch light, which worked well and, I am sure, uses much less power. The stock light gets very hot while the LED light stays very cool.
But, when I ordered another for a friend, I got the wrong item, which did not work. I am including the link for the LED that I ordered as a starting point for anyone interested. Reading the reviews, many people did not get what they ordered. I was very happy with the light I got on my first order (little pricy) and was not at all happy with my second order since it did not work in the fixture. But, replacing the stock bulb with some sort of LED bulb is a nice way to go.
http://www.amazon.com/LEDwholesalers-Bayonet-Single-Contact-Bright/dp/B002BK06LA/ref=sr_1_8?s=automotive&ie=UTF8&qid=1353867211&sr=1-8&keywords=led+bayonet+bulb
Steve