"The First Rule of 'Primary Wars'"

"is there is no Primary War.

The second rule, no story, comments or facts emanating from a right winged source are acceptable. Only those sources that have been approved by dear leader may be used.

Only through strict enforcemtn of these rules and tight control on all information sources may we prevent our progressive site from becoming a echo chamber."

Ok so that's not exactly what the Kos Kid said but it's pretty much the gist of his message.

Trying to ignore facts based solely on their source, with no attempt to even try and debunk the claims, is not new to the extreme left of the blogosphere. They'll even go so far as to try and dismiss it if it is even talked about on a conservative site.