Here's some interesting research. Mark Burnett is a security researcher who harvests passwords from the Internet using a variety of methods. He has the passwords of over 6 million users.
His analysis shows that Internet users still tend to choose their passwords from a very small list of options.
- 14% of passwords people use come from the top 10 most common passwords.
- 40% come from the top 100 passwords
- 91% come from the top 1,000 passwords
This tag cloud shows the top 500 passwords, where the size represents frequency of use.
It's amazing that people are so lax with their online security!
The most important aspect of your passwords is their length. You can learn more here and here.
Be safe out there!