After spinning off from Expedia and debuting on the NASDAQ in December, trip reviews site TripAdvisor posted fourth quarter 2011 revenues of $137.8 million, a 30% increase over fourth quarter 2010. Full year 2011 revenues were $637.1 million, a 31% increase over full year 2010. Fourth quarter 2011 GAAP earnings per share ) was $0.16 per diluted share compared to $0.14 for the fourth quarter 2010.