By Sifiso Mazibuko    November 18, 2014     Last week was pretty tough for actor Bill Cosby and television show host / cardiothoracic surgeon Dr Mehmet Oz. In what can only have been a fit of self-delusion, the celebrities went down a rather ill-advised path towards Twitter hashtag infamy as they tried to promote … Continue reading What lessons can brands learn from Dr Oz, Bill Cosby’s recent social fails? →