Portico, a digital preservation archive for the scholarly community and a National Digital Information Infrastructure and Preservation Program (NDIIPP) partner, has successfully extended the NDIIPP network to include a diverse and broad set of publishers and libraries through the development of a model that encourages institutions of all sizes to participate in digital preservation. Over the past two and a half years of archive operations, Portico has learned a number of lessons—most importantly that responsiveness to community needs is key to successful preservation.