ou have visited. This information lets tracking companies know what you read, what you write, where you are located, what you search for, and what you buy. And this highly personal information is assembled by those companies into detailed individual profiles of every person on the internet, containing <a href="https://assets.wordstream.com/s3fs-public/styles/simple_image/public/images/media/images/facebook_ad_targeting_options_infographic_update.png?26LWxETqnc01Oo7_PuvplhKTsNHCC0gA&amp;itok=67flVdty">data o