As of today, the new FB Privacy setting called “Instant Personalization” goes into effect.
The new setting shares your data with non-facebook websites and it is automatically set to “Enable”.
Go to Account>Account Settings>Privacy>Apps & Websites> Instant Personalization>Edit Settings and uncheck “Enable”.
BTW, if your friends don’t do this, they will be sharing info about you as well. Please copy and re-post.