The main theme of the World Trade Report 2011 is 'new era preferential trade agreements'. To stimulate debate, the WTO has created a specific web page where individuals can express their views on the role of production sharing networks in spurring bilateral and regional trade agreements and the nature of the challenge they pose to the WTO. The aim is to encourage discussion among WTO delegates, non-governmental organizations (NGOs), academic experts, WTO staff members and all those with an active interest in preferential trade agreements. In the months leading up to publication of the Report in July 2011, short articles concerning such agreements will be posted on the web page. Members of the research and policy community can contribute to this discussion by submitting papers of their own or by commenting on the papers already submitted. Comments are also sought from any individuals with an interest in this topic. All contributions will be taken into consideration by the authors of the World Trade Report 2011.