Twitter Used to Serve Papers

In what was no doubt the first ever 140-character legal document, the British High Court has served an anonymous web-pest an injunction via Twitter. This is the first time the microblogging service has been used to execute a court order.
The Court issued an injunction against an unknown Twitter member who used the name and likeness of a law firm owner (poor choice of victim) to spread conservative messages. The Court decided that the user had unlawfully impersonated the lawyer, one Donal Blaney, and that since the defendant was unknown, Twitter would be the best way to notify the criminal.

Read more here.