I have to say, whatever is being done with my personal data, it is remarkably ineffective. I get a lot of ads that are completely irrelevant to my needs/interests. The only time I can remember clicking on an ad was a Kohl’s ad announcing a sale on jeans. Since Mr. C. was in need of some, I clicked through and bought a couple pairs. This was several (5+) years ago. The fact that I remember it should indicate how rare it is.
My favorite ads are the ones that I have absolutely no idea what they are trying to sell me. Generally that would be pictures of highly specialized tools or electronics and it makes me wonder why they thought I would want one of those things.