Mossberg, Swisher to split with Dow and AllThingsD DOW Jones & Co. won't renew its partnership with technology news website AllThingsD, while longtime Wall Street Journal technology columnist Walter Mossberg will leave the paper at the end of the year. AllThingsD, a venture with Mr Mossberg and former Journal columnist Kara Swisher, rose to prominence covering the players of the high-tech industry and reviewing their products. Dow Jones' contract with AllThingsD is due to expire at the end of the year. "For years, Dow Jones/The Wall Street Journal has enjoyed working with Walt Mossberg and Kara Swisher... however, after discussions, both parties have decided not to renew the agreement," Dow Jones and The Wall Street Journal editor-in-chief Gerard Baker said. Mossberg, who began writing his Personal Technology column in 1991 and became one of the most influential gadget reviewers, didn't respond to a request for comment. The AllThingsD site was launched by Dow Jones in 2007 as part of a broader effort to tap into the market for online technology news. The site was an extension of the popular D: All Things Digital conference series, begun four years earlier. Dow Jones owns the AllThingsD brand and archives, according to people familiar with the matter. Dow Jones, owned by News Corp, which also owns The Australian, is the publisher of The Wall Street Journal. Mossberg and Swisher are in negotiations with multiple media companies, including Comcast Corp's NBCUniversal, for their next partnership, according to a person familiar with the matter. In his statement on the separation, Mr Baker announced plans for an expansion of the Journal's technology coverage and conference franchise, including the addition of 20 editorial staff covering digital.