Have you ever wondered why advertisers think you're a perpetual customer for a product you just bought? Wonder no more (we're aware that the Tweet below relates to Amazon, but you get the picture).
So was the Why? explained?, I lost track at that point.
I'm going to stick with 'cause they are all greedy a-holes who use possible sales as merely permission to be data fetishists.
Seeminlgy whatever I buy, I'm then inundated for the next few weeks with invitations to buy the item again or an almost identical item from the same manufacturer.
It's a broken idea, implemented in a broken manner, to all advertisers, knock it off!
Even a stopped clock tells the right time twice a day, at this point random ads shooting in the dark with no gathered info whatsoever would be more accurate.