ranchero.com

Three Weeks with the iPhone: “If any app on the iPhone could be considered ‘killer,’ in the sense that its very existence justifies the device’s purchase, it’s the Maps app. I’ve spent the last week wandering around a strange and daunting city (New York), and the iPhone’s maps app has helped me enormously (I’ve even been able to give directions to tourists on the street without actually knowing where I’m going myself).”