“The platforms that host that content can’t readily police all of it the way that a newspaper can carefully select what should go in as a letter to the editor,” says Harvard University Law School professor Jonathan Zittrain, who is also co-founder of the Berkman Center for Internet & Society.
Some pre-screening of content is still done. YouTube prevents some video from being posted through a copyright-screening tool that was created after Google took over.
via Stolen photos of stars find ‘safe harbor’ online – San Jose Mercury News.