Microsoft analysts wondered whether the proliferation of online news sites would result in consumer tunnel vision, a la Fox News viewers. The good news is most of us read a fairly balanced selection of news sources. "Filter bubbles" don't really exist. The bad news? Of the 1.2 million users surveyed, only 50,000 described themselves as "front page" news readers. The rest . . . read other stuff. What other stuff? Read the paper or allow The New Yorker to translate for you. Doesn't look good for mainstream news sites. Or, democracy.