Study: Most users of Facebook and Google had fundamental gaps in understanding of privacy policies. Less than half of users understood that their Google+ profile is visible to anyone online. Study suggests informing users within the app or website how their information is being shared is a better way to safeguard privacy. Google says its privacy center, published FAQs, Help Center articles, Good to Know website and in-product notifications help explain what data we collect, how we use it and how people can manage it.”]