I have never bought anything from an ad. One time I saw an ad for something that seemed very relevant but I had already clicked on the next link and when I navigated back the site showed something different :-(
Those are not the only ads that exist, nor do you need to click on them to be influenced. Everyone who thinks this way is usually incredibly susceptible to advertising, you just don't see it.
That happens a lot with me. I'll be reading a multi-page article at a site, get to the bottom of the page, click the button or link to go to the next page, and only then, since I'm not busy reading the page content anymore, notice the ad.
Just as I'm realizing that it is something I'm quite interested in and want to click it for more information, the next page loads and I've lost the ad.
