In the last period, Y2012, the largest presented item is Lead Generation advertising with Total Revenue of 1.83B. The fastest growing participant in our report is Lead Generation advertising with 15.46% growth in Total Revenue over 2 years between Y2011 to Y2012. The topic that suffers from the biggest downturn is Sponsorship advertising with 42.27% decline over the same period. This report is based on data published by IAB