How do you guys keep track of all of your travel itineraries and flights/accommodations? I've always just used google maps multi-destination mode and a text file that has all my flight and hotel check-in and check-out dates with their associated confirmation codes. But that becomes a bit cumbersome and error prone if my travel plans last longer than about two weeks.
Do you ever use any travel or backpacker planner software or websites? Are they any good?