An article from BizTech by Ricky Ribeiro
Recently LinkedIn was hacked, compromising many user accounts and passwords. This has brought up the importance of creating a unique password. According to MSNBC.com the number 1 password for the LinkedIn accounts was link, appearing 941 times from a sampling of hacked accounts. Following behind link was: 1234, work and god.
Bob Sullivan of MSNBC also suggests that you think of a sentence that you can remember, and take the first letter of every word in the sentence as your password. For example: My daughter Julie was born on November 1 would yield a password of “MdJwboN1.”
Changing your password regularly is also a good idea.