A bit of tangent, but it reminds me of a funny story:
I discovered one day that I am getting recommended "Long distance truck driver" jobs through email and some of the re-targeted ads. First, I ignored them, but in a week or two, it became apparent that it was not just a coincidence. After some research, I realized that I had listed "Device Driver" programming as a skill on my LinkedIn and personal website. I suspect it must have been crawled, and the word "Driver" was matched to send me those recommendations.
I discovered one day that I am getting recommended "Long distance truck driver" jobs through email and some of the re-targeted ads. First, I ignored them, but in a week or two, it became apparent that it was not just a coincidence. After some research, I realized that I had listed "Device Driver" programming as a skill on my LinkedIn and personal website. I suspect it must have been crawled, and the word "Driver" was matched to send me those recommendations.