Groople, an online group travel booking resource, has announced the appointment of Michael Stacy as CEO. David Loy will maintain his role as president and founder of Groople, working alongside Stacy on day-to-day operations as they spearhead the company's next phase of growth in the online group travel market. Stacy brings 15 years of executive level experience to his new post at Groople, including successfully growing some of the brands in online travel. He most recently served as president of Cendant's CheapTickets. Also at Cendant, Stacy served as SVP of marketing and product development for the company's Retail Travel Services group.