Nearly three-quarters of people with access to the Internet use social networking sites. Facebook’s default privacy setting for new users is set to Friends Only. Facebook lets others find your profile by searching for your email address and phone number. Google+: You cannot control how people search for you. By default, your posts are public. You can choose to make your public profile visible to no one, or pick and choose which details youd like to display. The only privacy setting to limit the audience of your tweets is to set your profile to Protected.”]