YouTube has changed its content guidelines and now bans videos that involve "inciting others to violence," the Washington Post reports. Last May Sen. Joseph Lieberman (I-CT) "issued a bipartisan report by the Senate Committee on Homeland Security and Governmental Affairs staff that described how al-Qaeda created and managed its online media," then wrote a letter to YouTube's parent Google "demanding that the company 'immediately remove content produced by Islamic terrorist organizations from YouTube'." YouTube only removed some of them but "refused to take down most of the videos on the senator's list, saying they did not violate the Web site's guidelines against graphic violence or hate speech." A policy review reportedly ensued, with YouTube telling the Post that the senator had "made some good points." Meanwhile, in The Guardian, a commentator calls for better self-regulation by social Web sites, saying that waiting for users to flag material that's offensive or violates site terms isn't enough. "The right direction is for there to be intelligent, independently-set but industry-agreed, standard practices, procedures and guidelines for companies to adhere to. The alternative is individual organisations at best doing what they feel is right; at worst doing as little as they can to avoid denting their margins."