The IAB is out today with its full year 2011 digital advertising report. There are a number of interesting things in the report, among them the mobile ad revenue estimates. According to the IAB mobile advertising in the US was worth $1.6 billion in 2011.
Of all the ad formats mobile showed the greatest growth, as one might expect. Below is a comparison of digital ad categories. Search increased its share of digital revenues and was by far the largest single category.
We haven't revised our mobile ad forecast for a couple of years, but it was very close to the IAB figures. I'm pretty happy with that.