Here is a neat service for helping organize your trips. You send your trip information (hotel confirmation or air travel confirmation, etc.) to firstname.lastname@example.org . TripIt brings sends you a reply which gets to build an account (if the first time), and to manage your trip information. TripIt is smart enough to parse your information into a more meaningful format.
You can get an .ics feed to integrate the information back into your calendar. You can collaborate on trips as desired.
Finally, there is a “clipit” tool that works with many browsers that allows you to add information from around the web into your trip plan.