As soon as you visit the sites in the pilot program (Yelp, Pandora, and Microsoft Docs) the sites can access your name, your picture, your gender, your current location, your list of friends, all the Pages you have Liked—everything Facebook classifies as public information.
Even if you opt out of Instant Personalization, there's still data leakage if your friends use Instant Personalization websites—their activities can give away information about you, unless you block those applications individually." On December 27, 2012, CBS News reported that Randi Zuckerberg, sister of Facebook founder Mark Zuckerberg, criticized a friend for being "way uncool" in sharing a private Facebook photo of her on Twitter, only to be told that the image had appeared on a friend-of-a-friend's Facebook news feed.
reports that "even when the government lacks reasonable suspicion of criminal activity and the user opts for the strictest privacy controls, Facebook users still cannot expect federal law to stop their 'private' content and communications from being used against them.
Among the new privacy settings is the ability to control who sees each new status update a user posts: Everyone, Friends of Friends, or Friends Only.
Separately, before Facebook can determine whether the user is logged in, some data may be transferred from the participating site to Facebook.Members can manually delete items from their Mini-Feeds if they wish to do so, and through privacy settings can control what is actually published in their respective Mini-Feeds.Some Facebook members still feel that the ability to opt out of the entire News Feed and Mini-Feed system is necessary, as evidenced by a statement from the Students Against Facebook News Feed group, which peaked at over 740,000 members in 2006.A "connection" is created when a user clicks a "Like" button for a product or service, either on Facebook itself or an external site.Facebook treats such relationships as public information, and the user's identity may be displayed on the Facebook page of the product or service.