Michael Shapiro, “Six Degrees of Aggregation: How the Huffington Post Ate the Internet”, Columbia Journalism Review, May/June 2012, http://www.cjr.org/cover_story/six_degrees_of_aggregation.php?page=all; “Google Analytics and Google Apps Help The Huffington Post Keep Its Edge”, http://www.google.com/analytics/customers/case_study_huffngton_post.html
