Having your bases covered
It must be nice to be a conservative blogger so you can talk about how Michael Moore not getting an Oscar nom is a sign Hollywood is mad at him, but had he gotten a nod we would have heard about Hollywood being out of touch with America.
Fahrenheit 9/11, while a good movie, was not one of the five best pictures of the year. It's as simple as that. The reason the liberal bloggers don't care is because they weren't the ones pushing hard to get "their" picture nominated. It was mostly talk on the right, and mostly lumped in with the idea that Passion would get snubbed while F 9/11 would be celebrated.
Maybe liberals just don't crave some sort of vindication from the Oscars for the movies they enjoy?