This Informational Recommendation document has been published as GFD #089: Title: Report for the GGF 15 Community Activity: Leveraging Site Infrastructure for Multi-Site Grids Author/editor: V. Welch Please visit this link to download it: http://www.ogf.org/gf/docs/?final Abstract: This document summarizes the Community Activity "Leveraging Site Infrastructure for Multi-Site Grids" held at GGF 15 on October 3rd in Boston. Thanks to the editor & contributors for work on this document. -- Greg Newby, OGF Editor