Facebook Marketplace is a secret weapon in winning over 20-somethings. I think Mark Zuckerberg's plan might actually work.

At an event in New York City on May 31, Facebook execs presented their strategy for ensuring the "next 20 years" of Facebook: wooing young users and applying AI everywhere. "We're still for everyone," President Tom Alison told the crowd, "but we also recognize that in order to stay relevant, we have to build for... Gen Z."