From We Pledge Allegiance to the Penguin:

“Every license for Office plus Windows in Brazil – a country in which
22 million people are starving – means we have to export 60 sacks of
soybeans,” says Marcelo D’Elia Branco, coordinator of the country’s
Free Software Project and liaison between the open source community
and the national government, now headed by president Luiz Inácio
Lula da Silva. “For the right to use one copy of Office plus Windows
for one year or a year and a half, until the next upgrade, we have to
till the earth, plant, harvest, and export to the international
markets that much soy. When I explain this to farmers, they go nuts.”

Now _that’s_ a fantastic way to make the cost of software really
visible to people. Translate it into tangible stuff!