What the owners don't enforce, the advertisers do. Over the past few months, AdAge.com reveals, both Morgan Stanley and BP have instructed newspapers and magazines that they must remove their adverts from any edition containing "objectionable editorial coverage". Car, airline and tobacco companies have been doing the same thing. Most publications can't afford to lose these accounts; they lose the offending articles instead. Why are the papers full of glowing profiles of the advertising boss Martin Sorrell? Because they're terrified of him.