Everything that we all post on the internet is "out there." Like others, I chose a screen name that I have never used on any other sites. Also, when you google your screen name- that is all it brings up is your screen name and your posts and profile info.. So, if you want to ensure your privacy- be sure not to add personal info in your profile.. So, people really can't find you, unless they know your screen name here on pc or your name is plastered somewhere on your profile or in your posts.