Useful script (Firefox only) to quickly add geocoding to a flickr photo, such as discussed here
EXCELLATRONIC COMMUNICATIONS: Geotagging Flickr with Google Maps and Greasemonkey Part 2:
Automated(ish) GeoTagging Flickr Images Process
1) Firstly you need Firefox installed.
2) Secondly you need the Greasemonkey (v0.2.6) extension installed
3) Install this greasemonkey script, which is for the maps.google.com site. (Installing GreaseMonkey scripts is as simple as clicking the link then going to Firefox's tools menu and selecting “Install User Script”. Then accept the default options and click ok.)
4) Install this greasemonkey script, which is for flickr.com
5) Go to the image on flickr that you want to add GeoTags to.