Facebook closes WhatsApp purchase now worth $21.8B

Facebook has completed its acquisition of the mobile messaging service WhatsApp for almost $22 billion, up from the original $19 billion when the cash-and-stock deal was struck early this year thanks in part to the rising ...

Study shows new CEOs who 'talk the talk' drive up stock prices

New chief executives, especially those appointed from outside an organisation, can see the company's stock price soar if they present their strategy to investors in their first 100 days, new research from Oxford has discovered. ...

Predicting what topics will trend on Twitter

Twitter's home page features a regularly updated list of topics that are "trending," meaning that tweets about them have suddenly exploded in volume. A position on the list is highly coveted as a source of free publicity, ...

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