Without our knowledge our information is being retained and sold on to third party companies. We are basically giving away our information for free. Everything you sign up to, every new account you make, every bit of info you share you are essentially sharing with the internet. There is probably somebody tracking your google searches right this minute!
We may not be in control of where our information goes once we have given it but we can control how much info we give out. People must be more aware of what they are sharing online on their social sites and keep their personal data as private as possible.
Here is an infographic that may help to explain what is going on a little better. Facts . & figures included. Source: http://www.visualcapitalist.com/much-personal-data-worth/