Source: Marin Software [download page]
Notes: Click-through rates across devices much more similar when normalizing for ad position, at least for positions 1 through 5. Marin’s study also predicts that by the end of next year, mobile could account for half of all paid search clicks.
About the Data: Based on a sample from the Marin Global Online Advertising Index, composed of advertisers who invest more than $6 billion in annualized ad spend on the Marin platform.
Related: Online Merchants Report Increasing Value of Paid Search in 2013