Kayak.com, the travel metasearch/comparison engine, has announced a deal with About.com to become About's "premier booking partner" and will provide access to their service on the About.com About.com travel and cities and towns channels.
More about the new Kayak/About relationship in this EyeforTravel.com story.
I've liked and used Kayak.com, since it launched in beta last year. In February, Kayak left beta and announced a paid listings service. Kayak.com technology also powers AOL's new PinpointTravel travel search site.