What are the benefits in upgrading an iphone 3 to iphone 3GS?

I have an iphone 3 and service with AT%26amp;T|||The main differences are it鈥檚 a bit faster to load and run apps (the S stands for speed apparently鈥?, has a higher resolution camera with video recording (3 mega pixel as opposed to 2 mega pixel for pictures) and support for faster 3G network speeds. Check out the Wikipedia pages below for more details.