The number of blog sites in China reached 34 million last month, a 30-fold increase from four years ago, State media said yesterday.

China has more than 17 million people writing blogs (short for Web logs) and more than 75 million people reading them, Xinhua news agency said. "The rapid growth of blog sites in China also brought potential business opportunities to the advertising industry," Xinhua said. "Some blogs written by famous people attract millions of daily readers." The report said that out of the 34 million blog sites, 70 percent are "dormant," having remained unchanged for more than a month.

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