OK, one reason for his bias is the Washington Post reporter works in the MSM. But he has other reasons -- ones that I completely agree with.

An excerpt:

To judge from the e-mails I received during the four years I spent on the White House beat, Post readers of all political ideologies agree: I am biased.

But in which direction?

A conservative magazine put me on its cover as "Dana 'Bias' Milbank." A liberal Web site made me its "Media Whore of the Week," and a posting on a liberal blog proposed "Whore" as my middle name. (I've decided to combine the "Bias" and "Whore" suggestions and make my middle name, simply, "Bore.")

In political journalism, complaints from ideologically driven readers come with the territory; sometimes I've gotten dueling complaints that I have betrayed my conservative and liberal biases in the same story. But I think the growing volume and the vitriol of the bias accusations are part of a new -- and dangerous -- development.

Partisans on the left and right have formed cottage industries devoted to discrediting what they dismissively call the "mainstream media" -- the networks, daily newspapers and newsmagazines. Their goal: to steer readers and viewers toward ideologically driven outlets that will confirm their own views and protect them from disagreeable facts. In an increasingly fragmented media world, ideologues have already devolved into parallel universes, in which liberals and conservatives can select talk radio hosts, cable news pundits and blogs that share their prejudices.

He then goes on to cite the PIPA study on the Separate Realities of Kerry and Bush Supporters -- a very important document, if I do say so myself.

BTW, the recent State of the News Media 2005 report, released by the Project for Excellence in Journalism and the Committee of Concerned Journalists, thinks this whole audience fragmentation thing along ideological lines is overblown:

"The overwhelming majority of Americans say they prefer independent, non-partisan news media. So, apparently, do advertisers and investors. In addition, distrusting the media does not correlate to how or whether people use it," the report said in its trends overview.