I want to

MapFight

This is a fun little tool. Type in the countries that you want to compare sizes for (including US states) and you get to see them both (in rather abstract form) with one overlaid on the other, with details on which is bigger. The graphic shows this quicker than I can explain:

via mapfight.appspot.com

Airport Chatter

via airportchatter.com

Nice idea - a resource to find out more about airports, from the people who use them. 2 problems - first, it's US airports only at the moment, and second - why isn't it an app? Sure, I can check out the stuff on the site prior to leaving home, but it would be so much more useful to be able to check out, rank, rate and comment on an airport on my iPhone while I'm sat around with nothing to do!

Gekko

Gekko helps you find places or "spots" you love based on your profile and on the preferences of like-minded people in the community.

"By initially answering nine quick questions in the Gekko Profiler, we’re able to determine what kind of hotels, restaurants, and other places you will love.

Our smart matching technology will identify other members of the Gekko community who share similar preferences to you. This helps ensure the recommendations you are given and the reviews you read are from people you have something in common with. At the same, it helps you discover places that you’d never thought of exploring."

Trip Essentials

Trip Essentials is an easy webservice that lets you plan and schedule upcoming trips, bookmark accomodations and discuss them with your friends.