10% of US search clicks in Q4 2011 came from mobiles or tablets

"Marin Software, provider of the leading online advertising management platform for advertisers and agencies, today released the findings of its U.S. Online Advertising Report, which finds mobile and tablet users accounted for 10 percent of all U.S. search ad clicks during Q4 2011. This represents a doubling of click share as a percent of total since Q3, 2011. Furthermore, the report reveals the click through rate (CTR) of search ads served on tablets, such as the iPad, was 38 percent higher than the CTR of ads on desktops."

Source:  Press release from Marin Software, 11th January 2012