[fr]
Drag the link [fr] above onto your browser's bookmark toolbar, etc.
Access a flickr photo detail page, then click the bookmarklet. This shows an HTML source code which contains the image and links to the flickr page like below:
(07/22/2010 updated)
Flickr's new interface supported.
(09/26/2010 updated)
New version released which supports Picasa and any other photo sharing service.
*Original post written in Japanese.