iv marked that
http://www.phishtank.com/phish_detai...hish_id=450834
as a phish, you can do the same for the original one too,
http://www.phishtank.com/phish_detai...hish_id=450504
the more it gets the more it becomes confirmed ( it appears 4 are enough to get it listed as "is not a phish").
although there does not seem to be a way to add information to the page explaining why we know it to be the case.....!
or that it can be classed as the new form of Phishing, that being the intra-ISP assisted Phishing.