[john70t]

So about a decade ago, I used Bing to search for flowers in Florida, on one computer.
I looked at about ten shops and then ordered from one.
It was not the first or last click and I don't believe that site held any particular significance in pages opened or time spent.

A few years later, I used Google to search for flowers locally in Michigan, using a different computer.

That FL flower shop I had previously purchased years before from was at the sponsored top of my Google search return.
-I was looking for local MI flowers.
-But Goggle was pushing me to purchase from a particular shop in FL.

I can only conclude that it was the same Internet Provider (Sprint I think) which sold Google my search history, or at least my single query.
But to know which flower shop for its sponsored paid ads, Sprint would also have known that I had previously purchased from that particular shop.

Sprint either had excellent predictive software on browsing habits, or had cross-reference access to banking records.
There didn't seem to be any other correlating element involved.