Randi Zuckerberg is quitting Facebook, the site founded by her brother Mark, to start her own social networking firm, All Things Digital's Kara Swisher reports. Zuckerberg has been working for Facebook for years and "has been a high-profile and charismatic personality inside the company and in Silicon Valley," Swisher writes. Plus, she's "not a geek like her brother."

Zuckerberg decided to start the company, to be called RtoZ Media, after time off on maternity leave. She wrote in her goodbye letter to COO Sheryl Sandberg and communications head Elliot Schrage:
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. We have made incredible progress, but there is still much to be done and other ways I can affect change. 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. ... 
 
As I end this chapter of my career, know that I leave with a deep love for Facebook and I value the experiences I have had here immensely. Be assured I will continue to be a strong, vocal evangelist for the most incredible social platform ever created. I am thankful for the strong mentorship, guidance, and support, which is empowering me to follow my dreams and show that you don’t have to be an engineer  to be a hacker ☺