19% of online ad spending in 2007 was with portals, down from 24%

For 2007, online ad spending through Avenue A/Razorfish was $735 mln, up 36% from 2006, and the number of Web sites that ads were placed on doubled to more than 1,800, according to the 2008 Digital Outlook Report. The share spent on portals dropped from 24% in 2006 to 19%, while search share rose to 31% from 28%, vertical sites rose to 39% from 37%, and spending on ad networks was flat at 11%. More dollars went to the top 5 ad networks.