In this paper we describe the model used for the NewsWire collaborative content delivery system. The system builds on the robustness and scalability of Astrolabe to weave a peer-to-peer infrastructure for real-time delivery of news items. The goal of the system is to deliver news updates to hundreds of thousands of subscribers within tens of seconds of the moment of publishing. The system significantly reduces the compute and network load at the publishers and guarantees delivery even in the face of publisher overload or denial of service attacks.