Valley marketer Louis Gray and Outside the Beltway editor James Joyner agree: Blog links account for less and less of the traffic to their sites, falling an order of magnitude behind search engines. "Search engines, social media sites, and aggregators delivered much more traffic than links from very popular blogs such as Scobleizer, TechCrunch, and Micro Persuasion," Joyner summarizes from Gray's data. His theory? The geeks who read blogs all day in 2003 are now following Twitter and other speedier media.

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