Script Summary: Adds a [URL] bit under the main photo in a flickr photo page, showing the photo's src.
In October 2009, flickr introduced a method for tagging people present in photos. To simplify the process of tagging people, they added a wrapper around the main photo in each photo page. This wrapper makes it slightly harder to get the image's URL.
This minimalistic script adds the text "[URL]" under the main photo, and [URL] links to the image's src. You can then simply copy this URL to restore the previous functionality. Depending on your browser, you might also be able to save the image directly via the URL ("Save link as..." in FireFox).
Please note: This script has been essentially superseded by a new script that adds a more convenient image thumbnail, that fully restores the original functionality.