Many media buyers and planners rely on ad networks more heavily today than two years ago, according to a new study by ValueClick Media/FastClick. The report was based on an August survey of 300 media
executives, conducted online by Insight Express using members of the MediaPost advisory panel. Forty-two percent of media buyers and planners who use ad networks said they spent more with such
networks now than in 2003, while 30 percent of respondents reported that spending was flat from two years ago, and 16 percent said their ad network spending had declined; an additional 12 percent said
they were unsure whether spending on ad networks had increased or decreased. -- Wendy Davis