How twitter Is Seeking to Be Accepted by Influencers: Don Lemon sat on a stool in front of the bright lights of a CNN studio the last time he recorded a TV segment in April. Mr. Lemon will be taking the lead when he returns to filming after a nearly year-long break, and he will be working with a new set. His upcoming show, "The Don Lemon Show," will debut on X, a website that was formerly...