Mark Liberman at Language Log has a post on the subject, and in particular on "the second extraordinary feature of Mapes' screed, namely her view that the only people who raised questions about the memos' authenticity were members of 'the conservative blogosphere, particularly the extremists among them'":

[Y]ou didn't have to be an expert on document analysis to follow the (straightforward, convincing and indeed incontrovertible) argument that certain of the crucial documents were crude forgeries. And the people who were convinced, and said so, were not all "far right blogosphere bully boys". Geoff Pullum [a fellow Language Logger who had blogged about the subject -EV] can be a bit rough on careless purveyors of bad grammatical and stylistic advice, but he's no thug; and I believe that he considers himself politically left of center ....