Mark Zuckerberg's sister complains of Facebook privacy issues Talk about ironic. Randi Zuckerberg, the sister of Facebook's zillionaire founder Mark Zuckerberg, complained when a photo she meant to stay private on the social network was made public. Randi, the 30-year-old former marketing director of Facebook, had posted a photo to her Facebook page showing her family's reaction to the new "poke" application, a photo-sharing tool that quickly soared to the top of the charts for iPhone users. According to a story on Buzzfeed, a friend of a friend saw the photo and reposted it on Twitter, turning a semi-private moment into a very public moment. Randi was not pleased. Not sure where you got this photo. I posted it to friends only on FB. You reposting it to Twitter is way uncool," she wrote on Twitter. "I'm just sensitive to private photos becoming 'news,'" she added later. Facebook users have long fought both sides of a war with Facebook, eager for the company's massive network of links and connections, but wary of what exactly happens to the content they post to the site. Many Twitter users added their two cents on the topic, suggesting that the real issue lay with Facebook's sometimes confusing privacy settings. "Instead of vilifying a subscriber for not reading your mind, maybe you should talk to your brother about recent FB changes," one person wrote. It seems everyone has privacy issues on Facebook sometimes.