New licensing requirements may also be imposed to weed out some companies, concentrating the business among well-established players like Sina which already have systems for expunging undesirable content, he said.
China mulls microblog limits before party meeting →
Among the steps Beijing might take to rein in social media are requiring users to register accounts with their real names or imposing a time lag between when comments are posted by users and when they appear on the sites, said Mark Natkin, managing director of Marbridge Consulting, which is based in Beijing and specializes in China's telecommunications and IT sectors.