The company that's said to have turned down a $6 billion acquisition offer from Google has now lured an important employee away from the second-biggest name in search. Michael Shim, Vice President of Mobile Business Development and Partnerships at Yahoo, will soon start at Groupon. Shim's resume is quite impressive. After graduating from Georgetown University and Cornell Law School, he worked for a time as a corporate lawyer. Then he collected some paychecks from AOL before starting at Yahoo in 2006.