- Internet search remained the largest revenue format in 2008, accounting for 45 percent of the full year revenues, up from the 41 percent
reported in 2007.
- Internet advertising revenue in the U.S. totaled $6.1 billion
in the fourth quarter of 2008, an increase of 4.5 percent from the 2008 third-quarter total of $5.8 billion, and an increase of 2.6 percent from the 2007 fourth-quarter total of $5.9 billion.
- Annual revenues have increased significantly on a year-over-year percentage and dollar basis for the sixth consecutive
year, after declining in 2001 and 2002.
- Online advertising continues to remain concentrated with the ten leading ad-selling companies, which accounted
for 72 percent of total revenues in the fourth quarter of 2008, up slightly from the 69 percent reported for the fourth
quarter of 2007.
- The top 50
90% of the online
Top 5 facts sources: IAB Internet Advertising Revenue Report 2009.