Nearly three-quarters of people with access to the Internet use social networking sites. Pew Research Center: Facebook, Twitter, LinkedIn and Google+ rank up on privacy and security settings. Not all privacy settings are created equal, so here’s a handy chart of how they stack up on user privacy. Find out how to update your privacy settings to maintain control over your account at the top of the chart. Use this chart to help you find and update your settings to keep your account in the right place.”]