Company says San Francisco rental registration ordinance is confusing, unconstitutional
                                
                                
                                    (Newser) -
                                    Airbnb has filed a lawsuit alleging its First Amendment rights have been violated and that rules surrounding a new city ordinance flout federal protection for internet companies, and its target is its own hometown, the  Los Angeles Times  reports. The ordinance in question was passed unanimously earlier this month by...