Localization.

[iGewappnet]

Originally Posted by spmwinkel

And here's a question I had for some time: if you'd get a US $25 gift card, can someone with a German iTunes account use it?

Not with the German account, but you could create an US account. If you have an US gift card you will be able to create an US account (okay, you need also an US address, but you can just use the address of a hotel somewhere in USA).