He could have just posted “found” signs on telephone polls, but this is 2011 and when you find something, you make a quirky, cute “This American Life”-style video and hope it goes viral. The story: a man decides he needs adventure in his life this year, he finds a roll of undeveloped film in Brooklyn’s snow-covered Prospect Park, develops it, and then produces a short video in an effort to track down the owners.
Source: Gawker
boywithgrenade.org 
I can definitely see this as a future This American Life segment, especially once he finds the owners of the film.
But what a find and quirky story.
In another decade or so this won’t even be possible.
Very sad.