I had a great time last year at WebInTravel (for reminder coverage look here). This year's WebInTravel is on October 20-23 alongside ITB Asia at Suntec in Singapore. The BOOT is planning to be there. Hope to see you there also.
One great session from the 2008 WebInTravel was the Start-Up Pitch competition between entrip, Conference Bay and TripFilms (the eventual winner). Siew Hoon is running this session again at the 2009 WebInTravel and is calling for submissions from companies looking to join the Start-Up Pitch competition for 2009. More details here. If you are a travel start up looking for exposure then I recommend getting involved.
I will be participating in a couple of sessions at WIT but the full programme for 2009 has not yet been released. Will let you know when it is. You can early register here (will open a word doc). Siew Hoon is also runing a series of lead up events called WIT*E - the first one on April 30 with presentations and discussions with Nigel Roberts of Marina Bay Sands, Robin Yap and Sashank Nigam of Insight Vacations and Jeaneete Ho of Raffles.