It's an interesting point. At my day job, I had an extensive discussion with a coworker who spends his days in sales and marketing. I was telling him that I'm not really the right person to talk to about marketing campaigns on the Internet because I'm virtually immune to them. Even on systems without adblock on, I rarely notice advertisements and I don't think I've ever clicked one. I don't like talking to sales people in stores because I generally don't gain anything by the interaction. And I have no idea what popular commercials are because I automatically blank them out of my perception.

Apparently, my aversion to advertising is so strong that FB doesn't even put any on my page.

He was aghast.

He ran down a list of current commercials for popular products, ones that he had been paying attention to, nothing.

We went to his Facebook page and his was full of advertisements, mine? Not a one.

"How was this possible? I'm starting to have doubts about the effectiveness of an ad campaign?"

It was then that we both realized that FB and Google are almost entirely ad supported and I must be a very bizarre outlier, never to be used as a benchmark for ad effectiveness.