Short feedback on the magnetometer (compass) and video features of the iPhone 3GS – teckstud:

I was showing it off to a friend who has the prior 3G iPhone. We were walking down a street in the East village and the way it was tracking our steps was wild. When the compass went to street level and showed us the building that we were standing in front of- he flipped! I think he’s going to shell out the money earlier to upgrade than he was hoping too. He also could not believe all the videos I shot of the fireworks over the Hudson on the 4th. They are pretty amazing- both in their detail and color saturation.