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One of Facebook's biggest issues in IPO is privacy, a recent study shows that 13 million American Facebook ussers are unaware of the privacy controls that IPO entails. Because of this people the amound of people that have fake information on their profile has increased, all in order to protect their identities.
One of Facebook's controversial pricavy control is the policy of sharing user's data with a third party via applications. This can occasionally be done by a "friend" without the person even knowing. If a friend runs an app and you have not been very specific with your privacy settings, your friend could accindentally give "the app" access to your information.
Segall, L. (2012, May 04). Millions of Americans Ignore Facebook's Privacy Controls. Retrieved from http://money.cnn.com/2012/05/03/technology/facebook-privacy-controls/index.htm