I ordered some things through Amazon and clicked to have some sort of notification via my N900 using cellular. I don't remember the exact name of what I clicked but it showed up as an option. It was something like "mobile tracker" but I don't see it now.

So when the package was out for delivery, I received a text message saying the delivery guy was nearby AND mappero opened with it tracking the location of the delivery guy. I was amazed - I could see that the delivery guy was about a block away. Later, I received another text message when the package was delivered and signed for. Has anyone else used this feature? I'm not sure exactly how mappero could track the delivery guy. If I hadn't seen it I wouldn't have believed it.