Mobile ad spend rose to $7.1 billion in the US in 2013

"U.S. interactive advertising revenues for 2013 hit an all-time high of $42.8 billion, according to the IAB Internet Advertising Revenue Report for the full-year, exceeding broadcast television advertising* revenues ($40.1 billion), for the first time ever. This momentous figure marks an increase of 17 percent from 2012’s landmark revenues of $36.6 billion. The report, unveiled today by the Interactive Advertising Bureau (IAB) and prepared by PwC U.S., also reveals that fourth quarter revenues for 2013 came in at $12.1 billion, an increase of 17 percent from the $10.3 billion brought in during the same quarter in 2012. In addition, this total represents an uptick of 14 percent from 2013’s third quarter revenues at $10.6 billion.
Other highlights include:
For the third year in a row, mobile achieved triple-digit growth year-over-year, rising to $7.1 billion during full year 2013, a 110 percent boost from the prior year total of $3.4 billion. Mobile accounted for 17 percent of 2013 revenues, whereas it was 9 percent of revenues in 2012.
Digital video, a component of display-related advertising, brought in $2.8 billion in full year 2013, up 19 percent over revenues of $2.3 billion in 2012. As a result, it also increased its share to become the fourth largest format, directly behind mobile.
Search revenues totaled $18.4 billion in 2013, up 9 percent from 2012, when search totaled $16.9 billion.
Display-related advertising revenues in 2013 totaled $12.8 billion or 30 percent of the year’s revenues, a rise of 7 percent over $12 billion in 2012.
Retail advertisers continue to represent the largest category of internet ad spending, responsible for 21 percent in 2013, followed by financial services and closely trailed by automotive which account for 13 and 12 percent of the year’s revenues respectively."

Source:  Data from the IAB, reported in a press release, 10th April 2014