The EFF noted that "For users that have not opted out, Instant Personalization is instant data leakage.
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.
Users can now hide each status update from specific people as well.
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.
Commenting on this misunderstanding of Facebook's privacy settings, Eva Galperin of the EFF said "Even Randi Zuckerberg can get it wrong.
On September 5, 2006, Facebook introduced two new features called "News Feed" and "Mini-Feed".
The first of the new features, News Feed, appears on every Facebook member's home page, displaying recent Facebook activities of the member's friends.
Facebook treats such relationships as public information, and the user's identity may be displayed on the Facebook page of the product or service.
Instant Personalization was a pilot program which shared Facebook account information with affiliated sites, such as sharing a user's list of "liked" bands with a music website, so that when the user visits the site, their preferred music plays automatically.
Criticism of Facebook relates to how Facebook's market dominance have led to international media coverage and significant reporting of its shortcomings.
Notable issues include Internet privacy, such as its use of a widespread "like" button on third-party websites tracking users, with its most prominent case concerning allegations that CEO Mark Zuckerberg broke an oral contract with Cameron Winklevoss, Tyler Winklevoss, and Divya Narendra to build the then-named "Harvard Connection" social network in 2004, instead allegedly opting to steal the idea and code to launch Facebook months before Harvard Connection began.
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.
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.
That's an illustration of how confusing they can be." A configuration problem on a Facebook server caused the PHP code to be displayed instead of the web page the code should have created, raising concerns about how secure private data on the site was.