The Financial Industry Regulatory Authority’s chairman said on Tuesday that regulators plan to review allegations that Morgan Stanley shared negative news before Facebook’s initial public offering with institutional investors. In a separate case, Nasdaq OMX Group has been sued by an investor who claimed the exchange operator was negligent in handling orders for Facebook shares following its IPO, causing losses for investors. All this pales GM yanking its 10 million dollar campaign with Facebook. Oh what a week it has been for “poor” Mark. Read the complete story.