IAB reports Internet ad revenue up an estimated 30% in 2005

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March 1 New York—Internet ad revenue totaled $12.5 billion in 2005, up 30% from $9.6 billion in 2004, according to the Interactive Advertising Bureau.

Fourth-quarter Internet ad revenue totaled an estimated $3.6 billion, up 35% from the year-earlier period.

The 2005 fourth-quarter and full-year online ad revenue figures were estimated by surveying and aggregating data from the top 15 online ad sellers.

Actual third- and fourth-quarter results will be reported in the IAB’s 2005 Internet Advertising Revenue report, expected to be released in April.

The report is prepared by PricewaterhouseCoopers for the IAB.

—Kate Maddox

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