US Search Ad Spending vs. Clicks By Device, Q1 2013 [CHART]
Kenshoo found that in the US, the allocation of paid search ad spending across devices is not keeping up with the distribution of clicks. In Q1 2013, the tablet and phone accounted for nearly 20% of paid search clicks, but the devices only garnered about 14% of search spending. The biggest lag was on the phone, which accounted for about 9% of clicks but only 5% of total spend. Read the rest at eMarketer.