jsburke writes "The Darfur Wall is a web site that raises money for Darfur, Sudan, where 400,000 people have been killed and over 2 million displaced since 2003. The site recently introduced a referral program called 'Advocates,' which it describes as a 'pyramid scheme for good.' From their blog: 'The program works by providing a participant — an Advocate — with a personalized web-link. An Advocate shares this link with friends and asks them to click on it, visit darfurwall.org, and donate. The Darfur Wall recognizes the link and awards points to the Advocate
... Like a multi-level marketing scheme, the program creates a network effect. But Advocates is no Amway. One hundred percent of the money it generates supports peace in Darfur.'"