Which is more popular Facebook or Instagram?

Related questions

1. Can someone tell if you Screenshot their Instagram?
2. Can you be on an Instagram account on two phones at the same time?
3. Can someone tell if you search for them on Instagram?
4. Which is better Instagram or Snapchat?
5. Why can't I get into my Instagram account?
6. Is it possible for someone to know that you've searched them on Instagram?
7. Can you see who looks at your Instagram?
8. Do I need an Instagram account to view photos?
9. Can I browse Instagram without an account?
10. How do you find someones Facebook from their Instagram?

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14. #snapchat
15. #youtube
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18. #popular
19. #instagram
20. #using
21. #number