I recently read a short article about achieving sharpness in your photos, and there was a diagram much like I've drawn below, about the proper way to hold your camera for optimal stabilization.
I realized that I had never given any thought to it... I always held my camera as naturally as I could, which turned out to be the right way after all.
By having your hand supporting the weight of the lens, it just makes taking photos that much easier. You have perfect access to the zoom and focusing rings, while giving your shutter-arm a break.
Just thought Id pass this along!