Margo Georgiadis, who was appointed chief operating officer of Groupon just five months ago, is leaving the company to return to Google, where she previously served as vice-president of global sales
operations, according to the Wall Street Journal. This is the second COO to depart Groupon this year: Rob Solomon left in March, for similarly opaque reasons. The train of executive departures,
and widely-reported financial difficulties (including a series of quarterly losses) all call into question the company's stability, potentially jeopardizing its plan for an IPO
sometime later this year.