Thomas de Lange Wenneck has a GPS attached to his camara. When he takes a photo the coordinates of the place are automatically stored in the EXIF information of the image file. Later he just needs to upload his photos to Panoramio and they are automatically located in the map. No need to map the photo manually with Panoramio's drag and drop interface.
Btw, Thomas makes wonderful photos, like this one:
Mange takk Thomas!