Friends no more? Zuckerberg's sister starts rival company
The sister of the Facebook founder Mark Zuckerberg has left the company to set up a rival company of her own.
Randi Zuckerberg has resigned from her job as marketing director of Facebook, saying that she wanted to focus instead on "building a company focused on the exciting trends underway in the media industry".
Ms Zuckerberg, who is two years older than her brother, was an influential force within Facebook.
In her resignation letter, she said she had poured her "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".
Ms Zuckerberg has set up a company called RtoZ Media, and said that further details on her new project are to be announced soon. She used her Twitter account to say that she had "mixed emotions" about the move.
A Facebook spokesman said: "We can confirm Randi has decided to leave Facebook to start her own company. We are all grateful for her important service."