It's called a wire service.
>Gramps: "Well, not exactly kid. You see, I was what they called a 'moo joo' troll. That's a euphemism for being a loser with no friends."
Yes, my grasndchild, they were using a technique called Funkspiel pioneered in the second world war. Kikes would pose as people who saw spreading awareness of their subversion as "shilling" – yes, I know it's ridiculous now, what, we're 50 years on from the execution of Blitzer and Netanyahu – but at the time people but into kikery.