Apparently, the diamond industry claims the movie, which is set in Sierra Leone in the 90s, paints a dirty picture of a global industry that has really cleaned up their act. So they (the miners & distributors) set up a website to espouse their point of view: Diamond Facts.
However, Global Witness, the non-governmental organization that does the most to research and disseminate information about the origin of ‘conflict diamonds’ (which is an understandaby difficult, dangerous task) disagrees. Global Witness, along with Amnesty International and Warner Brothers (which is distributing Blood Diamond) have teamed up to make Blood Diamond Action, a website which counters the industry’s claims.
Call me a pessimist (or a realist), but when it comes to politics in the developing world, the dirtier answer is usually correct.