What did iTunes card used for?

Related questions

1. Can iTunes card be used for data?
2. How do I check my iTunes gift card balance without redeeming it?
3. What can I use iTunes gift card for?
4. How do I know if an iTunes gift card has been redeemed?
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Tags

1. #purchases
2. #premium
3. #transactions
4. #store
5. #netflix
6. #apple
7. #signing
8. #computer
9. #money
10. #shopping
11. #including
12. #credits
13. #movies
14. #cards
15. #itunes
16. #ibookstore
17. #music
18. #connected
19. #disburse
20. #credit
21. #applications
22. #perform