Just as the title says: Have you ever clicked on an ad, knowing it was an ad, on purpose? What ad was it? Why did you click it?
Curious because I realized I have not once in my life clicked on an ad shown online on purpose. Accidentally, and being tricked into clicking the wrong thing sure; never with intent though.
One time, I was shopping for a specific item. I couldn't find it on ebay, Amazon, walmart or etsy. Then I went to some smaller retail site (they also didn't have it), and an Amazon ad for that item popped up. I clicked the ad, and it took me to the item page.
Amazon search (at least at the time) was so ineffective that I couldn't find it, while their ad data gathering was so complete they knew that I wanted that specific thing.