While Twitter has already simplified reporting abusive tweets, that's not enough if you're facing a very serious threat -- you want something that the police can use to get an arrest or restraining order. Thankfully, Twitter has delivered something that might help. A new email option lets you send yourself a copy of a threat report that you can take to law enforcement. While it only provides a basic summary of what happened, it both serves as an official record and helps officers understand what to do if they need private account information to make a bust.