A Better Mousetrap

I LOVE Kayak.com. Still not sure what they're business model is, I haven't researched it enough, but I'm guessing they're working out deals with all the sites and services they crawl to aggregate results for users on a referral basis or something. In any case, this is a wonderful example of a FREE service that delivers huge value to users by saving you time online AND money. Simple design, clean interface, and it "just works" without extra bells and whistles. Looking at how Farecast and others are also evolving their services is really encouraging as well. Check them out...