"Here is what Jack Shafer is," says Erik Wemple, who blogs about the media for washingtonpost.com. "Obviously, very talented, tremendously original and highly informed. But more important, he is utterly uncorrupted by friendship, money, power, anything. He is ruthless with people he doesn't know, but what is impressive is how ruthless he can be with the people he knows. He's impervious to outside influence, and it's a glorious thing to watch."