I recently bought a brand new pair of golf shoes from a physical store. I did not even search for them or look at any golf shoes online. The next day, I got Google ads served for the same brand of shoes I bought... Coincidence? Seemed very creepy. I know they sometimes do "re-tageting", but in this case I am sure I didn't look at any stores online. Only the fact that I physically visited a store with my tracking devi... errr i mean "phone", in my pocket...