Porter v. Jones, United States Court of Appeals for the Ninth Circuit, February 6, 2003 [ruling that websites which had organized informal online vote-swapping between Democratic and third-party voters during the 2000 Presidential election could sue the California Secretary of State for violating their First Amendment rights by sending cease-and-desist letters threatening criminal prosecution for allegedly brokering votes]. Read the opinion here [PDF]. Reported in JURIST's Paper Chase here.