I’ve been using The Guardian’s clever Second Screen webpage-slash-app during much of the Olympics. It is, frankly, a little too clever for its own good, requiring a certain learning curve to understand its full functionality.

But one particular element has really caught my eye: the Twitter activity histogram.

In the diagram below – presented to users before they use Second Screen – this histogram is highlighted in the upper left corner.

What the histogram provides is an instant visual cue to help in hunting down key events.

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