Primary data sources. Those that generate data that has to be adapted or converted are called secondary

Popularization and democratization. Cartographic production has always been in the hands of governments or agencies and, in many cases, has been strongly cen- sored due to its high strategical value. With the advent of VGI, geographical information becomes more democratic, and its creation is a free, participative and unrestricted process. The top-down approach that had dominated the production and use of cartography is thus inverted.

Citizens become sensors and are more conscious of their geospatial reality.

Cartographic production loses its mysticism.

The most relevant VGI project at this time is Open- StreetMap (OSM), a “ collaborative project to create a free editable map of the world".