This was an interesting account of the ways in which websites you visit track your browsing activity even after you leave their page, and a few ideas about what you can do about it if you want to do something.
I’ve noticed this for awhile, I didn’t know there was anything I could do about it.
I noticed this maybe up to two years ago. I added some information on my Facebook under “interests,” or what the category was called then. The next day I noticed that the ads on the side of the page were oddly specific to things that I liked. I feel as we progress in the technological age it will only get worse.