In case I wasn't clear enough yesterday, I believe that the most profound effect of the leaked climate change emails will be that the anthropogenic global warming movement will begin to lose the adherence of generally liberal geeks.
Up to this point, it was difficult to challenge the conclusions of AGW-believing climate scientists because most geeks don't have much expertise in climatology. We tend to consider ourselves scientists and to give other scientists in other areas of expertise the benefit of the doubt. Without a great deal of experience in climatology, it's hard for a geek to justify spending much time questioning the modes and methods of professional climate researchers.
However, the email leak has changed all this. Along with a hoard of emails, some source code for the computer climate models was also hacked and released to the public -- and the source code is an unusable mess. It doesn't take expertise in climatology to look at source code and determine that the code is garbage. There are many more geeks with software expertise than with climate expertise, and the geek community will go through every line of code and likely conclude that the computer models are so flawed that any conclusions drawn on them are without merit.
Despite the liberal tendencies of many geeks, I believe that the source code evidence will be insurmountable for most. Some will continue to cling to AGW because of a devotion to left-wing politics, but the majority of geeks will abandon their belief, and that abandonment by geeks will truly spell the end for AGW.