neighbors

And no, we're not kidding. When a Twitter user, @JJFromTheBronx, first received a notification to join the social network @Nextdoor (a platform for each neighborhood to alert one another about crimes and such) he thought, "great idea!" In no way was he excepting to receive this bizarre letter from one of his neighbors: 

Every witness your neighbor doing something really annoying. Something that just really bothered you? Ever think of just leaving a note for them to see....  Well, these people did!