For marketers wondering how conversion rates change depending on where ads appear on Web pages, Google Chief Economist Hal Varian appears to have an answer. Varian calls the problem "tricky," because ...

Many brands want to see their ads rank at the top of Google and have a great conversion rate. But this can be a challenge for brands. Understanding the impact of these two metrics, and how to think ...

Google‘s chief economist Hal Varian has been looking into the effect of ad position on conversion rates — and has concluded that there is very little difference in conversion performance between the ...