Large-scale indexes such as Thomson-Reuter’s Web of Science, Elsevier’s Scopus, and the National Library of Medicine’s PubMed give information professionals an ideal position to develop a set of valuable services that define and defend the organization’s value. To do this effectively requires an understanding of the scientific and business needs of their organization, an agreement on the organization’s preferred measures of success, a clear understanding of the strengths and weaknesses of the various measures available, and of how the metrics are best applied. Get some tips on how to do this in your organization.