WARNING! As of later on today, NEW PRIVACY setting called "Instant Personalization" that shares data with non-Facebook websites and it is automatically set to "Enable."
Go to Account>Privacy Settings>Applications and Websites>Instant Personalization>at bottom of page Edit Settings, and un-check "Enable". BTW if your friends don't do this, they will be sharing information about you. PLEASE COPY & REPOST~ Thx♥