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Available for over a year
What do this week's fourth quarter earnings of some of the world's biggest technology firms - Google, Amazon, Facebook and Apple - tell us about the sector? The Silicon valley-based technology analyst Larry Magid gives us his take. Also, Thomson Reuters chief technology correspondent for Asia, Jeremy Wagstaff, talks us through the latest development in audio and video communication online and explains why web chat and telecoms companies aren't cheering it on. And Joel Beckerman, the founder and lead composer of Man Made Music and author of "The Sonic Boom: How Sound Transforms the Way We Think", tells us how effective branding and marketing is as much aural as visual. (Photo: People in front of an Apple store. Credit: Timothy A. Clary/AFP/Getty Images)
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