I'm not going to change schools even though they allow weak passwords only.
The ability to spread to systems with weak administrative passwords.
And I guess the thing it brings you is absolute proof against a weak password.
I believe using 1 strong password all year is better than a new weak password every few weeks.
And even a very weak five-character all-upper-case password has 11 million possibilities.
I think it's a very good point because you do have the danger over the 'Net of somebody having the opportunity to guess a weak password.
This means that strong security can be obtained using weak passwords.
They can choose if they want to have a weak password.
And if it uses a weak password, it's much more likely to be crackable.
However, some argue that this practice may lead to mistakes and stress, encouraging users to choose weak passwords.