The owner of BlackBerry has agreed to go private in a $4.7 billion deal. Canadian investment firm Fairfax Financial would buy the struggling smartphone maker for $9 per share. Also, New York state has reached a settlement with some prominent firms in the fake online review business. The industry has moved way beyond having your friends write raves for you. Plus, in the past, a mass shooting would mean a dip in the stocks of makers of guns. But the shooting at the Washington Navy Yard was different -- no drop.