OpenStreetMap

Do you have a GPS device? If so, keep it connected all the time, tracking your moves. And then upload the tracks to www.openstreetmap.org and contribute to build a great mapping database.

"OpenStreetMap creates and provides free geographic data such as street maps to anyone who wants them. The project was started because most maps you think of as free actually have legal or technical restrictions on their use, holding back people from using them in creative, productive, or unexpected ways."

If you have a Garmin PNA, you can convert the data to Garmin's format and use it in you device.

Please contribute!