From Krebs on Security:

Social media sites are littered with seemingly innocuous little quizzes, games and surveys urging people to reminisce about specific topics, such as “What was your first job,” or “What was your first car?” The problem with participating in these informal surveys is that in doing so you may be inadvertently giving away the answers to “secret questions” that can be used to unlock access to a host of your online identities and accounts.

A good reminder that you shouldn’t use real answers to these security questions when setting up accounts. Make up nonsense, non-guessable answers and store them somewhere secure like 1Password.