Nice idea, but relies on a proxy server — p.geouri.org — that no longer exists. Consequently, doesn't work.
To echo a previous user, it would be better to allow a choice of destination, as is provided by something like wmflabs.org's GeoHack redirector used in Wikipedia.
click don't works :/
It could be usefull to have a choice between many map providers as OpenStreetMap, Bing, Google (for global maps) and some local providers (as IGN for Spain and France)