Because Facebook and Twitter posts are in the public domain, the ability to regulate it and to put it under surveillance is reduced. Morever, governments have access to some “private” data which scares many users.

Facebook allows automatic information sharing that users are not aware of. Timeline, a feature that maps everything a user has ever done on Facebook and Open Graph, an application designed “to broadcast a user’s surfing patterns and Web interests to friends and friends of friends.” There is a loss of user control combined with a lack of ability for consumers to control and protect their online reputations.

Laura Antonini, research attorney at Consumer Watchdog, says Facebook’s new sharing features “disregard the privacy of its users by making sweeping changes that expose personal information without giving users the chance to choose what information they want shared with the world.”

Facebook spokesman Andrew Noyes counters that Timeline and new Open Graph applications are” intended to make it easier for users to share music and other content with their friends.” He explains that Facebook uses tracking-cookie technology to monitor and correlate users’ Web activities, just as Google and other online ad networks and analytics firms commonly do. He says Facebook does so responsibly. Noyes declared “we offer numerous controls both before and after the fact” […] “all the sharing is opt-in and easily controllable.”

Mike Murray, managing partner of MAD Security, Facebook will not stop using this policy and may worsen. “The settings that are default today may not be in the future,” says Murray. “What we’ve seen from Facebook over the years is a constant, creeping advance in the amount of tracking that is done.”

Facebook has also raised fresh security concerns. New mechanisms to encourage the sharing of educational information, career and health have been promoted on Facebook.