Greasemap does one step better than the more subtle GeoTags extension (or Nearby) that just sits in your status bar. It displays a map at the header of your browser for any website that has geotags or an address embedded in the header.

It would be nice if Greasemonkey allowed for 'configuration' but on a very lite scale. So, for example, I could choose to have the map floating above the window, or position it somwhere else on the page.