Meta CEO Mark Zuckerberg holds a smartphone, as he makes a keynote speech at the Meta Connect annual event, at the company's headquarters in Menlo Park, California, U.S. September 25, 2024.Threads, Meta's rival to Elon Musk's X app, now has nearly 275 million monthly users, CEO Mark Zuckerberg said Wednesday."We continue to be on track towards this becoming our next major social app," Zuckerberg said on a call with analysts, adding that he was "quite pleased" with the trajectory of the app.The latest number ...