How does Zynga make money?

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Tags

1. #membership
2. #currency
3. #overall
4. #another
5. #makes
6. #clubs
7. #zynga
8. #subscriptions
9. #primarily
10. #players
11. #monetization
12. #showing
13. #transactions
14. #revenue
15. #items
16. #micro
17. #accounts
18. #money