One of my favorite features in modern smartphones is the ability to talk to the Global Positioning Satellite system, which allows the phone to determine where it is on the planet. The combination of mobile communications, computing power and being location-aware is a powerful one. Some of the most interesting applications for the current generation of GPS-enabled phones make great use of this feature. One of the reasons I bought the iPhone 3G when it was released in July was that it added true GPS capabilities to the phone.
