Bloomberg: Jon Stewart fans started grieving six months ago, when he announced his retirement from “The Daily Show,” and won’t know what to do with themselves after he signs off. But advertisers have a few ideas. Stewart’s somewhat hipper, two-decades younger successor, Trevor Noah, could create new opportunities for them and broaden viewership for a program whose audience’s median age is 46. “The floor is open for Comedy Central to make this a great thing,” said Marcus Collins, executive director of social engagement at the advertising agency Doner, whose clients include JC Penney and Fiat.