Remember when Andrew Sullivan was all a twitter about the "Arab 1848" that his misunderstanding of the past and the use of historical analogy was on a nearly hourly display? Despite the continuation of the tumult his interest, if judged by posting, has dropped to zero. I have no real idea why this is but I would suggest that it is that fact that what is there going on is so complicated and the triumph of the masses, if that's what happen in Tunisia and Egypt and might yet happen elsewhere, so long in coming that he just plain lost interest or, more precisely, he wasn't much interested in the events on the ground as he pretended to be.
In the same way, outside of TPM or TPM-like outlets, despite information concerning the continuing and increasing foolishness and counterproductive nature of the anti-human policies of Scott Walker and his fellow travelers is difficult to find in the national news. Indeed, in TPM and its fellows, we mostly read of popularity versus unpopularity. Why? Again, I have no real idea but would suggest that the groundswell of support for traditional American remedies for the excesses of capitalism embarrasses excess's most recent defenders: the Neoliberals left right and center wings.
In other words, once the reality underlying some phenomenon or another becomes complicated or runs counter to interests into the memory hole it goes.