A couple of times, Max and Kevin have butted heads over the influence of the so called "blogoshpere" has over Liberalism in the US. Max doesn't seem to think it exists while Kevin thinks it has an icy grip over all left leaning politicians (dramatizing for effect).
David Brooks from the New York Times (shocked they are now free by the way) weighs in in
this editorial. He sees the blogoshpere as extremists that can hurt the Democrats, if the Democrats fell in line with their extremist views. This would alienate their more centrist voters as well as shoot down any hope of getting disenfranchised Republicans.
The Democrats danced with this in 2004 without engaging it fully. However, it may have hurt them enough to cost them what should have been an easy win.