The user-created content of some user pages, public pages, and groups, has been criticized for promoting or dwelling upon controversial and often divisive topics (e.g., politics, religion, sex, etc).
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.
The EFF noted that "For users that have not opted out, Instant Personalization is instant data leakage.
It was not a security breach and did not compromise user data in any way.
Because the code that was released powers only Facebook user interface, it offers no useful insight into the inner workings of Facebook.
The reprinting of this code violates several laws and we ask that people not distribute it further.
where third-party websites could include a script by Facebook on their sites, and use it to send information about the actions of Facebook users on their site to Facebook, prompting serious privacy concerns.With this kind of personal information having the potential to seriously harm individuals, the method has been described by users as a presumptuous, dictatorial move and an offensive invasion of privacy by Facebook.Other popular websites have only asked for verification of identities through an e-mail confirmation link, or in some cases, a cellular phone text message confirmation.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.If such information is not given up, users suffer permanent restriction from their accounts with no alternative way of retrieving them back.