This infographic only shows hits from the United States but still gives some pretty interesting stats for Google, Facebook, Ebay, Amazon and all the other big names. The numbers are pretty impressive.
Adjustyourprivacy.com allows you to easily check your privacy settings on a large number of social media sites. It also lets you view both your Facebook and Google+ profiles as “public” users so you can see what it looks like to a stranger. Simple, effective and best of all, free!
I highly suggest checking it out. http://adjustyourprivacy.com