This misleadingly titled Facebook application shares your information with Microsoft and others. Here is a link to a Facebook fan page on privacy and how to OptOut of Facebook sharing your info w/ Microsoft and others http://bit.ly/d1ZB6h. Also take a look at the article at the Electronic Frontier Foundation.

• Account > Privacy > Applications > (scroll to bottom) Instant Personalization
• When you try to uncheck the box, you are asked “Are You Sure?” Click the final link “Learn More”
• Scroll to the bottom of the SECOND section “How do I block… my public info my friends share?”
• Click link to block Microsoft at http://facebook.com/docs