1. Signing Off

    Randi Zuckerberg Leaving Facebook

    Director of Marketing Research, Facebook, USA, Randi Zuckerberg, left, speaks during a social networking session at the opening day of the World Economic Forum in Davos, Switzerland, Wednesday Jan. 27, 2010. Financial reforms, climate talks and Haiti's reconstruction are set to dominate the agenda of the world's elites heading up to the Swiss mountain resort of Davos this week for their annual meeting.  (AP Photo/Virginia Mayo)

    Virginia Mayo / AP Photo

    After six years, Randi Zuckerberg is leaving Facebook, the company her brother Mark founded, to start a new firm helping companies with social-media strategy. Zuckerberg was marketing director of Facebook, although had been on maternity leave for the last three months. Her new company. RtoZ media, will be “focused on the exciting trends underway in the media industry,” she said in her resignation letter.

    Read it at AllThingsD