Funny that you mention Breitbart. Their founder Andrew Breitbart claimed that he helped start Huffington Post in an effort to show that mainstream news sources (NY Times etc) actually share most of the views of groups toward the far left, ie the former counterculture.

Was he successful? He certainly convinced most of the people on the right, but they were already on his bandwagon anyway... As someone in the middle, it's looking more and more like he had a point. (Even if the site that bears his name has become.. well, whatever it is, now.)