A couple of weeks ago, Stanford University Libraries hosted Dame Wendy Hall, Jim Hendler, and other web scientists affiliated with the Web Science Trust for a briefing on the Web Observatory initiative and a follow-on workshop organized by Lisa Green from Common Crawl. The notion of a Web Observatory implies a center proferring scientific instruments, but for the analysis of web data rather than natural phenomena. Indeed, the group's vision is that Web Observatories provide access to web datasets, projects, and tools. Eventually, a network of Web Observatories might offer both an interoperable architecture and distributed infrastructures for sharing and analysis of web datasets. The initiative touches on several areas of interest and investment by Stanford University Libraries, including data curation, web archiving, and supporting social science research.