The best stories across the web on media and technology
1. The choice of BBM over Twitter in the recent UK riots illustrates social stratification (Guardian)
2. New businesses pop up to teach web programming (Wall Street Journal)
3. How Twitter’s trending algorithm picks its topics (NPR)
4. 70% of Americans have no idea what geolocation apps are (ReadWriteWeb)
5. David Goetzl: Email is the new social (MediaPost)
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