From the website:
“(RED) was created by Bono and Bobby Shriver, Chairman of DATA to raise awareness and money for The Global Fund by teaming up with the world’s most iconic brands to produce (PRODUCT)RED branded products. A percentage of each (PRODUCT)RED product sold is given to The Global Fund. The money helps women and children affected by HIV/AIDS in Africa.”
Caught the story on Apple.com of all places (they have a branded Nano).