“Test it out yourself, go online shopping for a specific item, go to 5 or so stores looking for it. You’ll see that item for weeks afterward on sites with advertising.”
My file history re where I was on the internet are erased whenever I log off. After some intensive shopping or product looking for, I will log off as soon as I finish.
I still get unsolicited ads from Data Mining for weeks.
Boy I don’t. of course I use Startpage. No tracking.