http://bentasker.i2p/posts/all-whitepapers/general-security/5-the-importance-of-changing-default-passwords.html
We are constantly asked to create new passwords, whether for a Facebook account, financial management systems or a new router. Whilst new accounts seldom come with a default password, many devices do ship with a generic username and password. Despite wide awareness of the importance of password control, many people still fail to change these default passwords.