This document discusses building social networks for a safer society through citizen participation models. It describes a pilot project in Groningen, Netherlands testing a mobile app called "Meld!" that allows citizens and police to report incidents directly and collaborate in real-time. The pilot saw 205 reports over 3 months, with 117 leading to immediate police response. It concluded that attention to problems works, value exists in many eyes on a situation, and changing traditional response models requires communication to build trust and partnership between citizens and authorities.