UPDATED 07/13/11: Zarrella has canceled his appearance because of other conflicts.
I'm delighted to confirm Mr. Dan Zarrella, Social Media Scientist from Hubspot, as a keynote speaker for the Medicine 2.0 Congress.
Mr. Zarrella is an award-winning social, search and viral marketing scientist who has written two O'Reilly books. He studies social media behavior from a data-driven perspective to develop evidence-based practices for using social media to engage audiences. Zarrella's work has been featured in The New York Times, The Wall Street Journal, Wired, TechCrunch and other national media.
Zarrella's recent presentation at Harvard is above.