Over the years there have been loads of posters who have posted links without giving credit to the original uploader. It is annoying, it annoys me when I see my caps reupped without my permission or credit! But it's hardly a bannable offence!
If you want to ensure the original site gets credit then you could always quote his posts giving the source, maybe he'll cotton on to what you're asking! Or if you have a personal issue with Argentina then I suggest you resolve it by PM.