Bug: Can't add a particular game

For the life of me, I can't see why Listal won't add this entry into its database. Its the PS3 version of Call of Duty: World at War.

www.amazon.com/Call-Duty-World-War-Playstation-3/dp/B001AWBYNE/ref=pd_bbs_3?ie=UTF8&s=videogames&qid=1224782984&sr=8-3

For some reason the amazon api doesn't return details for that item I just get the error 'This item is not accessible through ECS.' You could add a manual entry though.