Meta has officially debuted its Twitter-like messaging app “Threads,” which the company is pitching as Instagram’s “text-based conversation app.” Just sixteen hours after launch, the social network had surpassed 30 million signups. Joanna Stern, Wall Street Journal senior personal technology columnist, discusses the launch of Threads and the challenge it poses to Twitter. 30% of Americans think tipping culture is “out of control,” according to a new survey. Joe Kernen, Becky Quick, and Andrew Ross Sorkin debrief on when they’re tipping–and how much. Shake Shack founder Danny Meyer weighs in on tipping, too; the Union Square Hospitality Group founder and executive chairman explains his perspective on tips, the labor market, and the state of the consumer. Plus, hedge funder Bill Ackman has changed his mind about vaccines. In this episode:Joanna Stern, @JoannaSternDanny Meyer, @dhmeyerJoe Kernen, @JoeSquawkAndrew Ross Sorkin, @andrewrsorkinBecky Quick, @BeckyQuickCameron Costa, @CameronCostaNY