
While many of Bluesky's battles have been with near-direct rival X (formerly Twitter), the new social media's own CEO has now thrown shots at Mark Zuckerberg with a hilarious t-shirt reference.
It's tough for new challenges to emerge and stake their claim within the social media space, yet Bluesky has proven to be successful as a 'phoenix' style platform in wake of Twitter's rapidly decreasing value after Elon Musk obtained the website for $44 billion in 2022.
It rapidly increased its user base following the US election results, soaring past the 20 million mark with relative ease, and has attracted a number of high profile celebrities that have jumped ship.
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However, Bluesky CEO Jay Graber now seemingly has Meta and Facebook founder Mark Zuckerberg in her sights, as a subtly mocking reference upon her t-shirt reveals a hilarious message that you won't want to miss, as reported by TechCrunch.

As a bit of context, Mark Zuckerberg was seen at Meta's developer keynote last September wearing a black t-shirt with text stretching across the chest and sleeves.
It was difficult for many to make out - especially as it was written in latin - but the text itself read 'Aut Zuck aut nihil', ominously translating to 'Either Zucker or nothing'.
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This is a direct reference to one of Roman emperor Julius Caesar's most famous quotes, who Zuckerberg has made himself known as a big fan of, but many found it odd for the Facebook founder to directly align himself with the words of a 'supreme ruler'.
Graber has taken this shirt as an opportunity to show her opposition to Zuckerberg's declaration of almighty leadership though, appearing at her SXSW talk wearing an almost identical top, although with wildly contrasting text.
'Mundus sine Caesaribus' was emblazoned across the Bluesky CEO's t-shirt, which translates to 'a world without Caesars', and that's both a hilarious dig at Zuckerberg's fashion choices and a bold statement on leadership within the tech world.

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It's especially pertinent at a time when one other major tech CEO has been accused of using his own 'Roman salutes', and large parts of the world's richest individuals were present and in the front row of Trump's presidential inauguration.
Many across social media were desperate to get their hands on their own versions of this t-shirt, and thankfully Bluesky quickly bought into the idea, selling it through a unique storefront with all proceeds going to benefit the AT Protocol developer ecosystem, which is the open source network that Bluesky operates on.
That's exactly what makes Bluesky so different to its rivals too, as while it does have a CEO in Graber and a team of developers, its open source nature ensures that nobody is in complete control of the site and its direction, leaving the opportunity for splintering routes always open.
Unfortunately you're out of luck if you wanted to pick one up yourself though, as they sold out in all sizes in under 30 minutes. While the store says that it's the 'final sale', some Bluesky engineers have asked users of the site if they want more, so that could suggest that a restock could be on the horizon.