Inrodutcion to Twitter

1. Twitter 2010/05/11 Yao-Jen Tang Mail: yjtang@cs.nthu.edu.tw Twitter: @showyoutang

2. Outline Introduction Technologies Notable Usages Features 3rd Party Applications Conclusion

3. Introduction (1/12)

4. Introduction (2/12)

5. Introduction (3/12) Other links Their logo Your 140 characters Your information Available characters counter

6. Introduction (4/12)

7. Introduction (5/12)

8. Introduction (6/12)

9. Introduction (7/12)

10. Introduction (8/12)

11. Introduction (9/12) Mouse Over Your Tweet Favorite Delete Mouse Over Other’s Tweet Favorite Reply/Retweet

12. Introduction (10/12) Hashtag #tagname Reply to @username Direct message D @username

13. Introduction (11/12) Service: Social networking / Microblogging Tweet: text-based (140 characters) Send & receive tweets via: Twitter website Short Message Service (SMS) External applications

14. Introduction (12/12) History 2006/03: Product Creation (in Obde) 2006/10: Form Obvious 2007/03: South by Southwest (SXSW) 2007/04: Form Twitter Inc. 2009/01: Best Startup Founder (Crunchies 2008 Award) 2009/07: Top 50 (Alexa) 2010/04: Buy Atebits & CloudHopperPromoted Tweet, Chirp

15. Outline Introduction Technologies Notable Usages Features 3rd Party Applications Conclusion

16. Technologies (1/4) Website: Ruby on Rails framework Hardware: Support by NTTA Message Queue Milestones: Cache Client Queue Server Operation Dashboard Metric + Logs + Science Product Subversion

17. Technologies (2/4) Cache Client: No Cache Ruby (w/MD5) C (w/MD5) C (w/FNV) Queue Server: Starling (Ruby)  Kestrel (Scala)

18. Technologies (3/4)

19. Technologies (4/4)

20. Outline Introduction Technologies Notable Usages Features 3rd Party Applications Conclusion

21. Notable Usages (1/7) Politics Campaign Education Entertainment Emergency Business Survey Opinion Outer Space

22. Notable Usages (2/7) Politics Campaign Education Entertainment Emergency Business Survey Opinion Outer Space

23. Notable Usages (3/7) Politics Campaign Education Entertainment Emergency Business Survey Opinion Outer Space

24. Notable Usages (4/7) Politics Campaign Education Entertainment Emergency Business Survey Opinion Outer Space

25. Notable Usages (5/7) Politics Campaign Education Entertainment Emergency Business Survey Opinion Outer Space

26. Notable Usages (6/7) Politics Campaign Education Entertainment Emergency Business Survey Opinion Outer Space

27. Notable Usages (7/7) Politics Campaign Education Entertainment Emergency Business Survey Opinion Outer Space

28. Outline Introduction Technologies Notable Usages Features 3rd Party Applications Conclusion

29. Features

30. Outline Introduction Technologies Notable Usages Features 3rd Party Applications Conclusion

31. 3rd Party Application (1/2)

32. 3rd Party Application (2/2) TweetDeck (8.48%) Tweetie (2.83%) Twitterrific (1.63%) Seesmic (1.11%) TwitterBerry (0.99%) HootSuite (0.63%) TwHirl (0.40%)

33. Outline Introduction Technologies Notable Usages Features 3rd Party Applications Conclusion

34. Conclusion Features: Conciseness Convenience Critical Mass Dissemination Future: User Stream Location Based Service Annotation Next Facebook?

35. Thanks Q &A

36. Microblogging