One of the goals of Sloan’s Scholarly Communication program is to better facilitate the discovery and review of research products available on the Internet. Since many of these materials (from working papers to datasets) do not appear in conventional journals, a small but growing community has begun to explore the idea of alternative metrics of value and impact, ranging from downloads and inclusion in personal reference manager databases to social media references.Funds from this grant support the continued development of ImpactStory, an innovative altmetrics platform that aggregates citations and other mentions of academic scholarship on the Internet, including references from arXiv, Mendeley, PLOS, Dryad, PubMed and Scopus, as well as Facebook, Vimeo, YouTube, and Wikipedia. Grant funds support development of the platform and the creation and implementation of a long term institutional sustainability plan.