This wouldn't be good.. At all.
How would you like if you said "KOS THIS GUY! HES TRAITOR!". Then the traitor desiguises as you. Then 4 people say its your name. So, everyone try's to attack you, but you kill them thinking they're all traitors.. BUT they're all innocent. Then you hopefully search for the last person, hoping for a chance to revive your karma. Then out of no where, a bullet fly's through the air and hits you in the face. BAM! 10 karma.