Network technologies have the potential to have significant impact on the nature and scope of secondary analysis. Ideally, secondary analysis allows the reassessment of the arguments of researchers, and also allows researchers not involved in the original research to engage with data in new ways. These may also reflect the application of new approaches or perspectives. In addition, there is an emerging educational role for secondary analysis, in which the availability of appropriately contextualised data can provide students of research methods with opportunities to learn to problematise issues and formulate research questions. Network technologies (particularly ‘semantic web’ and ‘linked data’ tools and approaches) offer the potential to allow data, analyses, researchers and participants to be distributed in both space and time, but well informed and reflexive practice is critical. In this chapter the author draws on experience in a number of recent research and development projects to explore some of the issues involved in preparation of qualitative data for, and its use in, secondary analysis.