Subtraction.com

Technorati’s 2008 State of the Blogosphere

Among the findings: “The majority of bloggers we surveyed currently have advertising on their blogs. Among those with advertising, the mean annual investment in their blog is US$1,800, but it’s paying off. The mean annual revenue is US$6,000 with US$75K+ in revenue for those with 100,000 or more unique visitors per month.”

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