Spending on mobile search in the US increased 333% in Q2 2012 compared to the same period last year, according to a report from IgnitionOne.
Impressions are also up 130% year-on-year (YoY), and clicks increased 325%.
Overall, mobile search made up 14% of total search advertising spend in Q2, up slightly from 12.3% in Q1.
This is similar to Q1 stats reported by Adobe, which found that mobile now accounts for 8% of US search spend compared to 11% in the UK.
IgnitionOne’s report shows that of the overall mobile search spend, tablets account for 60% with smartphones making up the remaining 40%.