A long time World Bank adviser, Robert Goodland, has published a brutal critique of the direction it's taken, focusing especially on the Amazon. From his Guardian op-ed:

The Bank Group is stimulating hundreds of millions of dollars' worth of cattle ranching in Amazonia, an activity I campaigned against strongly. These ranching investments violate applicable standards for both deforestation and slavery.

...

A quarter of the Amazon forest has already been destroyed, aided and encouraged by the bank. Amazonia suffered its most devastating drought yet in 2005. The 2007 drought and fire seasons look like being even more shattering. This loss of forest is intensifying climate change, and there are reports of impending reductions in rainfall and farm yields in the rest of Brazil. While Brazil is possibly crossing the threshold into free fall, plans are being drawn for massive dam, cattle ranching and highway projects.

Whistle blowers like this are incredibly important. They give us an honest view from the inside, bring accountability and speak out when it would be much easier to stay quiet.