Business TechTwitter appoints Vivian Schiller as news head Twitter has taken Vivian Schiller on board to head its news operations from January. Twitter has bagged former NBC executive Vivian Schiller to head the micro blogging site's news operations.by Anne Patterson
Unmasked: Obama Admin's worst Twitter critic is a White House national security officialby Vamien McKalin
Business TechTwitter seeks to raise over $1 billion in IPO, may pay 3.25% bankers' feeby Anne Patterson