: China's population of Internet users, already the world's biggest, has risen to 538 million. That's an 11 percent increase from a year earlier.
WHAT DROVE IT: Rapid growth in wireless Web surfing is credited. The number of people who go online from mobile phones and other wireless devices rose to 388 million, up 22 percent from a year earlier.
THE BACKDROP: The rise of Internet use and the explosive popularity of wireless access have driven the growth of a series of new Chinese industries from microblogs to online video. This month, regulators tightened control over online video.