Every time I use google to look up something I seem to get ads about the product or place.
Try it, google a location, hotel, object - all of a sudden the pop-ups start.
I think it was here on FR, someone reported they used the word ‘nitpicking’ and for a while got popups for head lice medicine.
I use Internet Explorer and almost all pop-up ads are blocked (not sure if it does it automatically, or if one needs to click on their settings to do so - - not much of a techie - - it just works for me).