Good journalism elicits a powerful response.
Scandinavia's largest newspaper Helsingin Sanomat proved this by creating an Emotion Cube that actually gauges its readers emotions after reading a story in the paper.
That large cube (4 meters/13 feet high) glows a different color based on the emotions Hope, Sorrow, Joy, Worry, Interest, Anger, Compassion and Surprise.
Users who read the newspaper on mobile, tablet or PC share their feelings and the cube turns colors based on said feelings. Nice way of getting users to spend more time at the site and hopefully start making more comments. Making a giant cube glow based on my emotions is a pretty cool incentive, no?