I have looked at this with mild curiosity, but haven't tried it yet.
I notice that there is a password strength checker , which tests your password when signing up. This pwd checker is faulty ; I can get a "very strong" assessment with only a few characters, or only "strong" assessment with huge difficult passwords. This is nonsense.
Better password checkers can be found here ..............
http://www.acctis.com/password_strength.asp?loc=en
http://www.securitystats.com/tools/password.php