2. Up to 140 characters long

3. Sent to your followers

4. Tweets usually public

6. 40 million tweets sent per day

8. Conversational – 38%

9. Pass-along value – 9%

10. Self-promotion – 6%

11. Spam – 4%

12. News – 4%

14. Famous: stephenfry,

15. Interesting: seashepherd

16. Trends: TrendsMelbourne

17. People you know: helpfulpaul

19. @pauljju: Barnaby Joyce decides which day is cheap for petrol every week (#OakesTips @LaurieOakes)

20. Nicola Roxon and Joe Hockey are having an affair and are already known as HockRox (#OakesTips @LaurieOakes)

50. Send a tweet

51. Follow helpfulpaul