Twitter Inc., the social-networking service that delivers 140-character messages, redesigned its site to make it easier to post photos, videos and maps directly on the page, mimicking features available from Facebook Inc.
Twitter Inc.’s Ali Rowghani resigned as chief operating officer after a power struggle over responsibilities, said people familiar with the matter, in the biggest executive exit since the microblogging company went public last year.
Twitter Inc., the social-networking service with more than 165 million users, elevated Chief Operating Officer Dick Costolo to chief executive officer, turning to a manager who is more focused on building revenue.
If the attendees at the World Economic Forum in Davos, Switzerland, this week are the story of people who lead in politics and business or aspire to, the names of those not making the trip tell a different tale.
Twitter Inc. co-founder Jack Dorsey will become executive chairman and head of product development as the company aims to narrow Facebook Inc.’s lead in online advertising and get users to be more active on its site.