JupiterResearch published an affiliate marketing study in May 2008 titled, “US Online Affiliate Marketing Forecast, 2007 to 2012.”
The key finding in the report was that US online affiliate marketing spending will reach $3.3 billion in 2012.
This figure is based on the affiliate marketing industry growing at a compound annual growth rate (CAGR) of 13 percent over the next five years.
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The data from JupiterResearch is based on revenue earned by affiliates and affiliate networks.
Additionally, the “US Online Affiliate Marketing Forecast, 2007 to 2012” indicates that affiliate marketing spending currently accounts for nine percent of total online ad spending and will remain at that level through 2012.