Randi Zuckerberg quits Facebook to start own social media firm

Randi Zuckerberg, marketing director of Facebook and sister of the social network's billionaire founder Mark Zuckerberg, has resigned from the company to start her own social media consulting firm.

Randi also announced plans to start `RotZ Media' which, she says, will gear towards making businesses more social on the internet.

In her resignation letter posted on the web site 'AllThingsD', she said she has focused on innovating by introducing new concepts around live, social, participatory viewing.

"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," said Randi.

She feels it is the "perfect time" to move out of Facebook and focus on building a new company following the "exciting trends underway in the media industry."

"I have decided my time at Facebook is coming to a close. When I think about the projects I am most proud of during my six years at the company, they all have one thing in common - they revolve around the intersection of traditional media and social technology," she said.