The average online video ad spending per person in the United States has been growing strongly since 2003, according to eMarketer, SFN's World Digital Media Trends 2008 reported.

In 2003, ad spending per U.S. online user was at US$1.63, but it reached nearly $2.5 in 2005, and is expected to achieve $8.7 by the end of this year.

In 2011, spending is expected to reach $23.50 per user, according to eMarketer.

The growth rate in 2007 and 2008 is estimated at more than 50 percent, and growth is forecast to remain in the double digits for the following years, according to the World Digital Media Trends 2008 report, released by SFN and the World Association of Newspapers.