Randi Zuckerberg Quits Facebook to Launch Biz Zuckerberg big sis is starting own social media firm By Rob Quinn, Newser Staff Posted Aug 4, 2011 1:47 AM CDT Updated Aug 4, 2011 2:00 AM CDT 1 comment Comments Randi Zuckerberg speaks during a social networking session at the opening day of the World Economic Forum in Davos. (AP Photo/Virginia Mayo) (Newser) – Randi Zuckerberg is leaving her little brother's business to start up her own. The 29-year-old director of marketing at Facebook is launching a firm that will help companies operate and better utilize their social media presence, reports the Los Angeles Times. Zuckerberg, who has been with Facebook since 2005, was recently nominated for an Emmy for her work on the Facebook Live news show. "I have spent my years at Facebook pouring my heart and soul into innovating and pushing the media industry forward by introducing new concepts around live, social, participatory viewing that the media industry has since adopted," she wrote in her resignation letter. "Now is the perfect time for me to move outside of Facebook to build a company focused on the exciting trends underway in the media industry." Zuckerberg has recently returned from maternity leave, and the break gave her time to reflect on the next phase of her career, sources tell All Things Digital.