China's internet dealt with 564 million users during 2012, increasing its user base by 10 percent. Despite continued efforts to monitor residents and restrict access to subversive content, these substantial gains were apparently driven by mobile internet access, with the number of Chinese users tapping into the web from phones and tablets rising by 18.1 percent, now totaling 420 million. According to these figures from the China Internet Network Information Center, that's 75 percent of all internet users.