Best of the Rest
Air Couriers Sign up at Courier.org ($45 registration) to carry shipping documents and fly on the cheap.
Airline Food Airlinemeals.net contains the musings and tray-table photos of a Dutch graphic designer obsessed with cabin cuisine.
Airports Airwise.com lists shops, restaurants, and transportation options for more than 60 airports worldwide, plus industry news and flight schedules.
Cruises On Cruise411.com, you can book sailings on 28 lines, search for last-minute deals, and view pictures and deck plans.
Ecotourism Find news, tour operators, and links to conservation organizations on Ecotourism.org.
Electric & Phone Kropla.com's comprehensive listings of electrical and telephone systems worldwide help you figure out which plugs to pack.
Frequent Fliers Everything you need to know about mileage you can find at Webflyer.com, including program rules, double-mile promotions, and tools to keep track of your miles.
Health Clubs Fitforbusiness.com lists hotels with the best athletic facilities in the United States, the United Kingdom, the Czech Republic, and Australia.
Internet Cafés More than 4,000 Internet cafés in 149 countries are listed on Cybercafes.com.
Maps Mapquest.com has the most comprehensive driving directions and road maps for North America and Europe.
Opinions Tripadvisor.com compiles reviews of North American and European destinations from guidebooks and other travel publications.
Spas Make reservations worldwide at Spafinder.com and read articles from its sister magazine.
Travel Advisories The U.S. State Department's travel warnings and information sheets on every country in the world are at travel.state.gov. Supplement them with the British versions at fco.gov.uk, which are more comprehensive and less politically fraught.