Maybe obs (delete if it is)

as suggested by Undolog (undolog.com/2009/08/31/come-ot ...) just copy & paste

javascript:void(prompt('',gApplication.getMap().getCenter()));

in the url page after pointing on google maps to get latitude and longitude

undolog.com/wp-content/uploads ...

Or you could just right-click on a point on the map and click "What's Here".