Have you ever tried to enforce a tougher policy on passwords for your users? IF you haven't you should, a simple password can lead to a potential breech and loss of the users data to third parties.
Use these simple steps to gauge how strong a password is. Note this is only a suggestion and does not gaurantee a secure password. Generally the higher the value, the more secure you can consider the password.
Password Check: Checks a given password based on best practices for password creation. Also allows you to enter a second word(username) to make sure the password doesn't include that word.
PasswordStrength: The relative strength of the password. The higher this number is, the more secure your password is considered. Please use the hashing functions listed next to further secure your password before saving to any sort of database.