Finally figured it out a day later when reviewing my hike on the Fitbit app. At the end of my hike I forgot to shutoff route tracking. On my way home, I had stopped by Walmart to grab a few things and while there, looked at their ladders. I could see on the app the path I took through the store, including when I stopped for a few minutes in front of the ladders. That was enough data to trigger ads for ladders for the next couple of days.
We leak data about ourselves constantly without realizing how much we're doing it or where it ends up going. Lots of it is also circumstantial and makes me wonder what erroneous ideas some of these databases might have accumulated over the years and who gets to see that "information". What happens if you walk through a part of town where there's an activist rally for "We Love Kitten Torture" going on? Do you forever get tagged in a bunch of databases as an animal torturer?
