Expedia (NASDAQ:EXPE) stock plunged 15% after disappointing bookings numbers and the departure of CEO Peter Kern.The travel site earned 132million,92centspersharefullydiluted,onrevenueof2.89 billion during the quarter. This compared with net income of 177million,1.11 per share, and revenue of 2.61billionayearearlier.However,thedepartureofKern,whohadbeenCEOforfouryears,spookedinvestorsthemost.Expediawasduetoopenthismorningatabout134 per share, a market capitali ...