Threads: Ten million join Meta's Twitter rival, Zuckerberg says

July 6: Ten million users signed up for Meta's newly launched Threads app in its first seven hours, the company's chief Mark Zuckerberg says. He pitched the app as a "friendly" rival to Twitter, which was bought by Elon Musk in October.

Experts say Threads could attract Twitter users unhappy with recent changes to the platform. Threads allows users to post up to 500 characters and has many features similar to Twitter.