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•  The Wall Street Journal reports that Groupon CEO Rich Williams and COO Steve Krenzer have stepped down.  Williams also has given up his board seat.

The story says that "Aaron Cooper, a company insider who most recently served as Groupon president for North America, has taken over as chief executive while the company searches for a permanent CEO.  Groupon didn’t comment on the reason for the executive changes … It also didn’t address the now-vacated position of chief operating officer."