Beijing enacted new rules requiring Internet users to verify their identities. The gov't said the rules strengthen online privacy protections, but came after it was rattled by corruption complaints on Chinese microblogging sites. The rules, proposed earlier this week, were widely expected to pass. U.S.-traded shares of China search engine Baidu (BIDU) fell 0.4% to 99. Sina (SINA), which operates Twitter-like service Weibo, rose 2.2% to 48.35. Web video company Youku Tudou (YOKU) fell 0.1%. Game developer Changyou.com (CYOU) rose 2.2%.