“The six ‘Robin Hooders’ named in the suit troll downtown Keene — often tracking parking enforcement officers — in search of cars parked at expired meters. When they find one, they pay the meter and slip notes under the windshield wiper of the vehicle that says: ‘Your meter expired; however, we saved you from the king’s tariffs, Robin Hood and his Merry Men. Please consider paying it forward.’ The note includes an address where people can send donations for the effort. The city claims in the lawsuit that the ‘Robin Hooders’ are causing the city’s three parking enforcement officers so much anxiety and distress that they’ve considered leaving their jobs.”
http://www.washingtontimes.com/news/2013/may/14/new-hampshire-city-suing-robin-hood-paying-parking/