This video shows how to do Geocoding and Reverse Geocoding in Quantum GIS thanks to the “geocoding” plugin. To work the plugin will need a valid Google API key (code.google.com To understand better the results are used maps overlays from Google and OpenStreetMap. This is possible thanks to a plugin called “openlayers” that, as the name indicates, uses the OpenLayers APIs to add layers from Google (and OSM, and Yahoo) into the QGIS canvas.