Time notes that most discussions whether the news media is biased overlook the most significant bias out there.
"As anyone following health reform knows, centrism is a political position too. And you see moderate bias -- i.e., a preference for centrism -- whenever a news outlet assumes that the truth must be somewhere in the middle..."
"Often, moderate bias is just the result of caution, but the effect is to bolster centrist political positions -- not least by implying that they are not political positions at all but occupy a happy medium between the nutjobs. Meanwhile, conservatives see moderate bias as liberal, and liberals see it as conservative -- letting journalists conclude that it's not bias at all."