This document discusses the evolution of the World Wide Web from Web 1.0 to the current Web 2.0 and possibilities for Web 3.0. It notes key aspects of each phase such as the rise of social media and geo-location data on Web 2.0. The document also discusses NIST's role in establishing early standards and measures in response to issues like the 1904 Baltimore fire. It proposes next steps like increasing collaborative tools and NIST scientist involvement online.