If you're essentially an unreconstructed back-of-an-envelope free-style organiser then you may feel TripIt's intuitive rigour is a file too far. But those who like to get all their ducks in a row - and that would be me - will really appreciate how it so-easily pulls together all your travel elements in one place and joins up the dots.
Oh, and the penknife gets a laser and a fingerprint-secured, encrypted USB flash drive. And you thought it was just for whittling the night away. Read all about it in July 10th's Go Gadgets in the Irish Times.