There has been good number of turn-by-turn GPS applications released for the iPhone over the last few months including some from big names like Tom Tom and Navigon. Back when Apple announced that they were going to allow apps to offer turn-by-turn directions they said that there would be no limitations other than the fact that developers can't use Google Maps for that functionality.

It was a tough decision, but I decided to upgrade my iPhone 3G to the iPhone 3GS. I wasn't sure if the new features would be enough to justify the purchase, but I figured I should be able to sell my iPhone 3G on eBay and recoup a good chunk of the cost. So I pre-ordered the phone, and got it delivered to me last Friday morning.

When Apple announced that the iPhone would be capable of tethering a computer to the Internet a lot of customers in the U.S. shrugged their shoulders because AT&T wasn't on the list of carriers who were ready to roll the service out.