Don't reuse passwords.
Use lower case letters, use numbers, use symbols. Make your passwords at least 14 characters. The longer the better.
Logins and passwords were leaked. An estimated 3 million users were affected. The good news was that most of the logins were three years old.The LastPass Blog came out with an interesting analysis of the data set leaked. It's still the same problem with too short and too simple a password. People are still using the same weak password for many websites.