A few days ago I signed up for the new TripIt service. I didn’t have very high expectations, and I’ve already planned the rest of my trips for the year, namely my trip to ApacheCon. That trip was booked by a regular travel agent, and the form in which I got the documents was unlikely to be parseable by Tripit, so I just entered it by hand. I was really impressed by how much Tripit knew about my plane flight. I wish that it was similarly informed about my hotel. The itinerary management is pretty compelling for my uses.
There is also a social networking component to TripIt, which allows you to coordinate travel with other people, and you can generate a location stream and calendar feed. If TripIt can do what Doppr does, which is tell me who else will be in a location during the same time range, then I’d say that Dopplr should be pretty worried. Actually according to the TripIt blog, they are planning to do just that. They are also planning to do restaurants, which means that they might be able to act as a kind of evite/renkoo for groups of people looking for restaurants to eat at while traveling together. Yow. Call that the “Greg Stein feature”.