Shares in tech giants including Google, Yahoo and Facebook fall sharply, but could it be time to invest?
Barcelona's $25m deal with Intel kick-starts a sponsorship revolution, says Simon Chadwick
Shake-up by new CEO Marissa Meyer looks to be working in battle for Web domination
Deal is major gamble for CEO Marissa Mayer - Yahoo has history of 'making companies it buys uncool'
Tech firm tries to soothe shareholder anger as chief executive's pay is revealed
Company no longer 'king of the heap' as profits go from 'WTF to OMG' with no new products coming
Deal had more to do with the app's technology than the talents of its teenage creator, Nick D'Aloisio
Seventeen-year-old does deal after securing early funding from Ashton Kutcher and Yoko Ono
Which start-ups will make it big this year and can web dinosaurs like MySpace be revived?
Mark Zuckerberg faces challenge of growing in emerging markets and making as much money out of users as Google