This document discusses the past 10 years and future of Web Science. It provides an overview of how the Web has evolved from a place to retrieve documents to a platform for coordination, monitoring, delivering services and understanding data. Web Science has progressed from case studies to developing concepts like the "Social Machine" and models of tagging. The document poses questions to a panel of experts about the strengths, weaknesses, opportunities and threats for Web Science over the past 10 years and what the next 10 years may bring.