Many new Bluesky users praise the site's similarities to "old Twitter."Bluesky; App StoreSince the election, Bluesky has acquired millions of new users and surpassed Threads on app stores.Many new Bluesky users are praising the feeling on the site as being similar to "old Twitter."Social media researchers told BI users wait for a large enough user base before switching sites.Bluesky still has a long way to go before it's a true challenger to Meta's Threads and Elon Musk's X — at least in terms of user numbers — but it's playing catchup fast among users nostalgic for a simpler format.This week, the app shot to the top of Apple's App Store and Google's Play Store, and a Bluesky spokesperson told Business Insider it hit 18.3 million registered users.While still a far cry from the 259 million active daily users Musk says are on X and 275 million monthly active users on Threads, activity on Bluesky has also seen a noticeable uptick.New users on Bluesky have been publicly praising the site's similarity to "old Twitter," complete with a reverse chronological timeline, less hate speech and misinformation, and more control over what content is shown in your feed.The growth has the potential to snowball.