Andre Engels wrote:
When would someone like to use that picture in Wikipedia or a Wikibook or whatever? When they're talking about the village, I assume.
This position is untenable. Have you tried to geotag any significant amount of images that way? You cannot accurately measure the latitude and longitude of the object you are capturing. It might be quite large. Or it might be two different objects at different locations (another building in the foreground and the Eiffel tower far behind). The only sustainable policy is to register the point position of the photographer and, if possible, the pointing direction of the lens. If you want to find photos of the Eiffel tower, you need to search for photos that are tagged in a surrounding region.
There is a discussion and illustration at http://en.wikipedia.org/wiki/Geocoded_photograph