I haven't seen this addressed anywhere else so I'll ask it here. Quick poll: Did you ever use your GPS during a flight?

It was great fun to turn on my Garmin during a recent flight from IAD to EWR. Although I've lived near DC for over 30 years, I am not the best at recognizing landmarks seen through the window during flight. It was great sport zooming down to the street level and zooming out to see exactly our location and speed throughout the flight.

By the way, the inflight magazine specifically permits GPS devices to be used above 10,000 feet. I'm not sure why they don't want you to use it during takeoff or landing.