A Conversation

"This":http://storify.com/brendannyhan/how-much-does-congressional-process-matter-to-vote?awesm=sfy.co_mD5w&utm_source=t.co&utm_medium=sfy.co-twitter&utm_campaign=&utm_content=storify-pingback, between Brendan Nyhan and _Politico_ reporter Alex Burns is

The dynamics of Twitter cascades

"Matt Yglesias":http://thinkprogress.org/yglesias/2011/10/18/346349/its-not-how-many-followers-you-have-its-who-follows-you/ writing about how the now famous protest sign