Microblogging use in China quadrupled in 2011

Related: Tech and gadgets

1. Headlines
   1. Sorry, Bieber! Rihanna is the most viewed artist on YouTube

      Bad news for the Biebs! On Tuesday, Rihanna passed the teenage heartthrob as the most viewed artist on YouTube.

   2. Battery tests show Apple's new MacBook Air beats competitors by a mile
   3. Google: 'We're not in cahoots with the NSA'
   4. Xbox One 180: Microsoft ditches always-on DRM, lending restrictions
   5. Firefox feature to track the sites tracking you
   6. Nintendo CEO: 'We are to blame' for poor Wii U sales
   7. Apple TV gets HBO Go, WatchESPN
2. Multimedia
   1. 
      Video
      News of royal birth to be posted on Twitter
   2. 
      Video
      How the PlayStation 4's hardware will bring a new realism to video games
   3. 
      Video
      Recalculating! GPS may lead you astray
   4. 
      Video
      30 years ago: Sally Ride’s journey into space