<i>Google suffers when advertisers fail to deliver a good user experience. Google's solution to this problem is Quality Score ("QS"). QS weights the value of a bid in the auction for ad placement and forces the advertisers delivering the worst user experience to pay more than those with better user experiences competing for the same query.</i><p>Does anyone know anything more about this? It seems counter-intuitive. If Google wants to maximize revenue then charging more for less relevant ads doesn't make sense if their goal is for ads to be more relevant. That may change advertiser behavior but wouldn't it decrease their revenue?