"Without negative feedback trolls almost always leave of their own accord." There are psycho-trolls, who do it out of contrarian disposition and who might go away, like you say.And there are paid trolls, who do it for money. Frost is one of these latter prostitutes, in my opinion. He won't go away unless he is banned. Here he is panting for Walt Mossberg's death blow to the Watch. He should be banned, even if the rules have to be changed to ban him.