We discuss an emerging issue that has as yet received scant attention: the sustainable management of international reverse supply chains. A reverse supply chain is the network of activities involving reuse, recycling and final disposal that follow after a consumer is finished with a product. International flows of products for reuse and materials for recycling are significant and increasing. We review the sustainability issues associated the international reverse supply chain for personal computers. In terms of environment impacts, the existing literature suggests that the risk of leachage of toxic materials from sanitary landfills is low. A recent set of scientific work analyzing informal recycling in China confirms serious emissions and exposures. From a social perspective, an international used market plays a role, though as yet poorly characterized, in increasing availability of Information Technology hardware to lower income groups. Reuse and recycling activities constitute an economic of significant scale and its associated employment should be considered as a factor in societal decisions pertaining to the reverse supply chain.