and I doubt this is the best way for WikiMiniAtlas, since there are so many different ways that the coord template can be called. Just consider all the lat/lat_min parameters to infobox templates. Shouldn't you just dig out from the external links table, all the links to the stable.toolserver.org/geohack/ and parse the coordinates from those URLs?
Yes I should, and I thought I already told you that this is what I'm doing for the english wikipedia and for commons. And I also set up a page explaining why this is quiite a lot of work, and how people can help me with this, if they want faster updates for their language. http://meta.wikimedia.org/wiki/WikiMiniAtlas/CoordinateProcessing I guess I'll have to make this more public....
And when WikiMiniAtlas is invoked from an article, such as Grängesberg, the call to the toolserver (that fetches the map tiles) could perhaps be used for updating the coordinate for that article. We can be pretty sure that those who update a coordinate will pop up the WikiMiniAtlas to see they made no mistake.
Yeah, that's not a bad idea. I even used to have a Javascript gadget that sent the data to the toolserver, whenever a coordinate in an article was updated. In any case, the red dot, is generated on the the client side and will always use the most up to date coordinates.
Dschwen