WallyDay.com

Jonathan Leger, on his blog, tells a cute story about social pressure. It goes something like this:

(A) research group went around neighborhoods in California and put one of four signs on people’s doors. Each sign encouraged the homeowner to conserve energy, and gave a reason to do so. The four reasons were: 1) to help the next generation, 2) to save money on your electricity bill, 3) to save the planet, and 4) because your neighbors are already doing it. After some time passed, the group went back to the houses and measured the electricity usage against the reading they took before putting up the signs.