Well, yes and no. You will always get ads, and targeted or not (based on tracking data) was only going to matter about 4%. Not sure when this was posted on HN,

Well, yes and no. You will always get ads, and targeted or not (based on tracking data) was only going to matter about 4%. Not sure when this was posted on HN, but multiple papers and researches have reached similar conclusions. It's not all that strange if you think about it, because the people that were going to click on ads were going to click anyway, and those who wouldn't aren't suddenly changed because the ads are targeted.