The Censorship Game: Chinese Twitter Will Score User Behavior China's top microblogging site, Sino Weibo, has introduced a points-based system for its Twitter-style service -- one that penalizes users for posting controversial content. more info... West expels envoys over massacre of Syrian children BEIRUT (Reuters) - Western powers expelled Syria's envoys on Tuesday in outrage at a massacre of 108 people, almost half of them children, and peace envoy Kofi Annan urged President Bashar al-Assad to take bold steps to halt the bloodshed as "a tipping point" had been reached. The killings in the town of Houla drew a chorus of condemnation from around the world, with the United Nations saying entire families were killed in their homes on Friday, some by army tanks and others probably by pro-Assad militia. ... more info... Witness in Clemens trial says was told Clemens used drug WASHINGTON (Reuters)