We're big fans of efforts to use the power of advertising to make people more aware of pressing social problems, from HIV/AIDS in Russia, to landmines, to the impact of war on children. Indeed, we hope that those who are working to make the world a better place get more and more sophisticated in their use of powerful images and compelling messages.

This public service announcement from Médecins Sans Frontières on the impact of HIV/AIDS in Africa is the latest good example of the trend. Simple, strong, addressing a vitally important issue -- we need more of this work in the world.

(Thanks, Andrew.)