users of this wood consume 10 percent of the total. According to the WWF, this level of concentration means that a small number of leading companies are in a position to create the critical mass required for certification to take off. (WWF, 2001, p.1). Besides the rapid growth of forest certification in the last few yearswhich now amounts to 2 to 3 percent of world forest outputthere are other indications that wood certification is near a mass take-off phase. A recent study of customers of BC forest products (IBM Business Consulting Services, 2003), for example, concluded that a greenward shift in wood product procurement was taking place and that major adjustments were taking place that would make wood certification a major part of markets in the near future. Perhaps the most obvious testament to this shift is the 1999 decision of Home Depotin response to persistent proteststo phase out non-certified wood in all its stores by the end of 2002. Despite some bottlenecks in certified wood supply, other retailers are being forced by public and ENGO pressureand the Home Depot decisionto consider stocking certified wood (Krill, 2001).