More than 30 million people signed up to Twitter's new rival, Threads, within 18 hours of its launch.

Meta unveiled the new "text-based conversation app" earlier this week.

Twitter has seen a decline in activity since Elon Musk's takeover, with users blaming a lack of moderation and constant policy changes.

Matt Navarra, social media consultant and industry analyst, says Twitter has lost the power it once held...