&gt; Could this be explained by technical people using more ad-blockers?<p>I don&#x27;t know, but I wouldn&#x27;t think so. I don&#x27;t use ad-blockers (never have), and I don&#x27;t click many ads. I go around them or close them, but for the most part have learned to ignore them. The only ads I click on are targeted ads that are relevant to my interests. I would think that technical people are less likely to be duped into clicking them, but I wouldn&#x27;t attribute it to ad-blockers.