Every time you browse, you leave a trail of data behind that companies use to...

https://iris-wiki.win/index.php/Decoding_the_Footer:_What_is_BLOX_CMS_and_Why_Does_Your_News_Site_Use_It%3F

Every time you browse, you leave a trail of data behind that companies use to build a profile on your habits. It’s essentially a digital shadow following you across the web