In its first ten years, the Global Entrepreneurship Monitor (GEM) has had three main aims: to measure differences in the level of entrepreneurial activity between countries, to uncover factors determining national levels of entrepreneurial activity and to identify policies that would stimulate entrepreneurship. This paper reviews the theoretical and empirical contributions by the GEM consortium ten years after the presentation of its first Global Report in 1999. The evolution of GEM measures of entrepreneurship is tracked, and the quantity and quality of peer-reviewed scholarship based on GEM data and models are assessed. Prospects and recommendations for the future are noted, as GEM continues to expand and scholars outside the consortium increasingly employ GEM data in their work. Copyright © 2013 Inderscience Enterprises Ltd.