As Facebook’s stock price continues to crater, The New York Times’ Andrew Ross Sorkin lays into David Ebersman, the social network’s chief financial officer. Could one man be to blame for the company losing more than $50 billion in market value in three months? Yes, says Sorkin, “It is David Ebersman’s fault.” Among his many sins, “Ebersman appears to have badly misjudged the demand for Facebook’s I.P.O.,” Sorkin admonishes.