In the computer retail world we used to joke that when computer crashed we would call that an “undocumented feature”. Well Facebook has plenty of those and unfortunately they affect your online privacy.
There is a great post over at Searchengineland.com by Danny Sullivan that explains how your privacy can be exploited by some very simple search functions at Facebook.
The article is a must read for any Facebook user or for anyone looking for potential exploits in users privacy setting at Facebook.