A simple idea, beautifully executed

Click around this 3D map of London, as it floats delightfully in mid air, to see which areas are happiest

The guys behind this observed real social interactions in public places in each area, to determine its score. That's a lot of work! Perhaps the same 'effect' could have been achieve more easily using location filters on social listening tools—I don't know—but either way, the result is interesting to anyone living in London. Nice work.