VISIT CNBC.COMX South by Southwest South by SouthwestReddit co-founder Alexis Ohanian reflects on the 'giant fail' that changed his life Catherine Clifford 43 Mins Ago CNBC.com Getty Images Alexis Ohanian, Co-Founder and Executive Chair of Reddit. SHARES Being rejected from Y Combinator may have been the best thing that ever happened to Reddit co-founder...