You may never have a mansion like Oprah, but you can now chat with her favorite interior designer, Nate Berkus—for a fee, of course. A newish app, Intro, allows anyone to book one-on-one video calls ...

There’s a classic meme question: “Dinner with Jay-Z or get $500,000?” It’s a joke about perceived business acumen, and the whimsical idea that if you just get an hour with the mogul, the conversation ...