That is how I would envision it. The contacts that I have are all business contacts with address, city, state, zip information. When I travel to a city, it would be nice to bring up maps and navigation and see all the contacts as pushpins. It sounds like "Jestexman" has ways to make this happen, but it would be really nice to have an app that would stay synced with your contacts. Even better if it could import multiple lists of addresses. I have customer sheets that contain over 7000 locations. Geez would it be useful to be travelling and have them all on my map as POI. I understand the limitations of what is out there, but I think it would be a great software add on if someone would create and app to handle the backend work.