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<http://thenextweb.com/apps/2012/05/14/magic-tate-ball-app-launched-to-show-you-art-based-on-your-surroundings/>
<http://thenextweb.com/apps/2012/05/14/magic-tate-ball-app-launched-to-show-you-art-based-on-your-surroundings/>