This guy made a tumblr and postered downtown Manhattan with these posters and postcards, apparently in the hope that he would find some chick he walked a couple of blocks home one evening. This is the kind of madness that New York sets off every minute of every day.
Actually, the site and postering campaign seems to be to publicise this internet tv series. It's pretty grim. For the real deal, go to the Craigslist missed connections page.