Video:
"Demon Sheep Ad Man Tells All" Mother Jones
Reading:
"A cyber-house divided" The Economist
"Self-Segregation or Deliberation? Blog Readership, Participation, and Polarization in American Politics" by Eric Lawrence, John Sides, and Henry Farrell
(I wrote an article"Los blogs políticos y ciberpolarización" for the Spanish edition of Campaigns & Elections last April that was largely inspired and based on this research.)