Bloomberg: The U.S. Supreme Court has buttressed speech protections on the Internet, throwing out the conviction of a man who used graphic language on Facebook to suggest he might kill his wife, kindergarten students and an FBI agent. The case marks the first time the high court has ruled on the rights of people when they post on social media. It tested how the federal threat statute applies in a world of online communications, with their potential to reach thousands of people instantly and to be misunderstood.