TripAdvisor's path to global growth is a much easier one than Kayak's and it is not hard to envision heightened competition or even a merger of the two over time.
A Wikipedia-like wiki travel guide could be a tremendous, free resource for information-hungry travelers. The current efforts have been starved for resources.
Fast track services are taking hold in China, and the U.S., as well, for the privileged few. Both countries should fix their security-lane roadblocks for the rest of us down here in the cheap seats.
American Airlines' direct-connect push has yet to take off in a huge way, but the BookIt.com agreement shows it ain't dead yet. Old-school GDS protests aside, travel agencies should be able to establish such ties with anyone they want to.
Pictures are worth 1,000 words and there seems to be that many social travel apps and sites. Most of them feature photo boards and images, and Jetpac is one of the latest entries.
This obviously isn't a way to properly visit a country because the everyday people you encounter can be the most meaningful part of a trip. But, with North Korea, there appears to be little other choice.