overall missions because of the scale of the operations at Wal-Mart. Suppliers also enjoy not only the stability that more intimate relationships with Wal-Mart brings, but also the guidance and support from Wal-Mart’s nonprofit partners. The Wal-Mart sustainability strategy no doubt looks to be off to a promising start; they must not become complacent and must press-on carefully in order to make these networks sustainable and able to expand without interruption. The first thing they need to do is manage these partnerships carefully in order to keep costs down. They also need to be able to manage the balance between offering “green” and conventional “non-green” products in its stores. Finally, because of the very high number of nonprofits in the network, Wal-Mart must manage the loss of these partnerships. Individual groups may be unable to get credit for a large reduction on environmental impact. Over time, these groups’ inability to be able to demonstrate their impact may cause some problems with their fundraising because donors will demand more and more data on their performance. These problems could eventually cause the nonprofit groups to withdrawal from the networks.