Hindsight is ...

Gates predicted, back in January 2004, that spam would be resolved by 2006. He notes a couple of methods that may resolve spam. We realise this has not been the case, yet. Thanks slashdot.

On a related note, I found this article that describes the cost of internet fraud, both the direct cost and indirect costs associated with the business processes used to manage fraud. I found this article from a good old google search.