As Reuters reports, the rule was implemented on Monday, more than a year after the Communist Party began circulating a draft on a sweeping new online identity management policy. In a notice published Monday, Chinas State Administration of Press, Publication, Radio, Film and Television (SARFT) said the rule is intended to prevent vulgar content, base art forms, exaggerated violence and sexual content in Internet video having a negative effect on society. The move is the latest in a series of laws requiring consumers to register their real names on microblogging websites and with mobile service providers, though the rules have proven difficult to enforce. In September, the Communist Party passed strict new anti-defamation laws designed to stem the spread of rumors and misinformation on social media sites like Sina Weibo, raising serious concerns among free speech advocates. Youku Tudou and Renren are among the most popular video sites in China, and many have used them to upload content that is critical of Communist Party policies.