Is affiliate marketing really profitable?

Related questions

1. What is the average affiliate commission?
2. What's a good affiliate commission?
3. What is SFI affiliate?
4. How much can I earn from Amazon affiliates?
5. What is the difference between affiliate marketing and network marketing?
6. Does affiliate marketing really work?
7. Can you make good money from affiliate marketing?
8. Is ClickBank free for affiliates?
9. Is affiliate marketing worth doing?
10. What percentage do affiliate programs pay?

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17. #people
18. #other