http://www.einstein.yu.edu - Kevin Pho, M.D., founder of KevinMD.com, urges physicians to engage in the "PR battle online" against those who spread false health claims and pseudo-science using social media. This talk was given at Einstein and is part of faculty development associated with a Josiah Macy Jr. Foundation grant that Einstein was awarded in 2012 to promote online professionalism among faculty and students.