English: A Master padlock with “r00t” as password. Español: Un candado marca Master con “r00t” como contraseña. (Photo credit: Wikipedia)
Bumped into an article of Forbes and it lists the worst ever password of 2011. You should start changing your password if the below data hit your list! 
1. password
2. 123456
3.12345678
4. qwerty
5. abc123
6. monkey
7. 1234567
8. letmein
9. trustno1
10. dragon
11. baseball
12. 111111
13. iloveyou
14. master
15. sunshine
16. ashley
17. bailey
18. passwOrd
19. shadow
20. 123123
21. 654321
22. superman
23. qazwsx
24. michael
25. football