Study: Online Advertising Increases, CPMs Decrease
While demand is up, the cost per CPM is down. The average rate fell 4 percent in 1999. This appears to be a trend as rates had slipped 6 percent in 1998. The average CPM rate was $33.75 in fourth-quarter 1999. AdKnowledge, Palo Alto, CA, compiled the survey information from more than 3,000 sites.