The discussion of Bill Wasik's And Then There’s This: How Stories Live and Die in Viral Culture in the Vulture Reading Room is really picking up. Today, the Times' Virginia Heffernan wonders if the virus metaphor for cultural transmission has passed its sell-by date, and Improv Everywhere founder Charlie Todd admits he's only read the book's first chapter and espouses the merits of pantsless subway riding. [Vulture Reading Room]