An advertisement for Weibo in Beijing. The Chinese microblogging site uses a large team of censors to monitor users' posts, a former employee says. (Reuters/China Daily)
An advertisement for Weibo in Beijing. The Chinese microblogging site uses a large team of censors to monitor users' posts, a former employee says. (Reuters/China Daily)

The business of censorship: Documents show how Weibo filters sensitive news in China