After just three days we can say that the link to YuGiOh Cards application in iTunes can be found for at least three sites:

http://www.apptism.com/apps/yugioh-cards
http://www.ipodtouchfans.com/forums/showthread.php?p=1159281
http://thomas.infoxenter.com/description-id.php?url=42908

And this is the list of countries for the visitor of the site.