A strong password should have a mix of character types. Try to include a mix of lowercase letters, uppercase letters, numbers, and special characters like !, @, #, $, etc. Don't forget to include at least one special character, or the password generator will get a little too excited and start generating passwords that are a bit too... enthusiastic.
Minimum Length ComplexityJust because you're using special characters doesn't mean you have to stick to the usual suspects. Try out some of the more unusual ones, like the upside-down exclamation mark (¬), the tilde (~), or the euro currency symbol (€). Just be sure to check that your password doesn't contain any sensitive info, or you might end up with a password that's as useful as a rubber chicken.
Character PickerJust because you can make a password that's as long as a novel doesn't mean you should. Keep it simple, stupid! A short, snappy password is often the best way to go. Just don't make it too short, or you'll be back to square one.
Minimum Length