Back in February 2004, I posted a blog entry that claimed Mann was guilty of academic deception. I put him in the company of Bellesiles, the professor who falsely claimed low rates of gun ownership in America before the civil war, and Donald Foster, the self-styled literary detective who bamboozled his peers with bogus computer studies.
Climategate shows I was correct in my assessment of Mann. I think a lot of skeptics thought he was cooking the climate books. Now we know that that is exactly what his cabal was doing.
Orson Scott Card did a much better job of exposing Mann as a fraud in 2007. Read and spread.