patlockley/openattribute-chrome — pull request #14 by barryhunter (2012-03-13 13:00:59+00:00)
Title: Was not working with  xmlns:dct="http://purl.org/dc/terms/" attributes. 

Didn't work with three letter prefixes (eg xmlns:dct="http://purl.org/dc/terms/")
AND
As per http://labs.creativecommons.org/2011/ccrel-guide/#Images, rel can be something like rel="cc:attributionURL dct:creator" whereas the extension was checking for exactly rel="cc:attributionURL"

This is the page testing with...
http://www.geograph.org.uk/photo/1107922