stbartshopper
Senior Insider
There is a pretty nice website where one can opt out of many of the tracking tools used by various companies that then sell your information to others as well as use it themselves. The opt out can be done on both your computer and other devices, including your smart phone.
Here is the site
http://optout.networkadvertising.org/#/
Here is the site
http://optout.networkadvertising.org/#/