Is Twitter a social network?

Related questions

1. Is twitter or Facebook more popular?
2. Do you need hashtags on twitter?
3. Is Twitter better than Instagram?
4. Should I use my real name on twitter?
5. Does FB own twitter?
6. Are hashtags important on twitter?
7. Why is it called twitter?
8. How many letters are in a tweet?
9. Is Twitter more popular than Facebook?
10. How do I stop getting texts from twitter?

Tags

1. #network
2. #blogging
3. #content
4. #twitter
5. #actually
6. #favorite
7. #corporate
8. #nokia
9. #social
10. #announced
11. #development
12. #business
13. #micro
14. #during
15. #presentation
16. #today
17. #everyone
18. #kevin
19. #world