Looking for the inside scoop on the whys and wherefores of the business travel industry? The wise, witty and articulate road warriors profiled below all write obsessively readable blogs. Read them not only to keep up to speed on what may affect your next business trip--the sudden shutdown of Clear, the fast-track security lanes at many major airports, the new and sometimes baffling fees hurled at passengers and guests by airlines and hotel companies, and so on--but what may affect business travel over the long haul.

High Anxiety is the personal blog written by Joe Sharkey, the business travel columnist for The New York Times. He strikes the right balance of informational insider and hilarious curmudgeon. Be warned, however: Some of his posts, particularly a recent one about pilot training, may give you a new reason to be white-knuckled on your next flight.

The Joe in question at Joe Sent Me is Joe Brancatelli, a former editor at Frequent Flyer magazine and columnist at now-defunct biztravel.com. He started this portal shortly after 9/11, with features, columns and links, all written by volunteer experts. Since then he's developed a faithful following of readers who appreciate the candid site and the fact that it's commercial-free (no ads, no promos, nothing to buy except a subscription to some content). He likes to say he's the voice of American business travelers--ordinary Joes, so to speak.

BoardingArea is a collection of some of the best travel writers in the blogosphere, all chosen by Randy Petersen, arguably the world's top expert on frequency programs. There's great content on traveler gadgets, the art of the upgrade and managing the absurdities of life on the road. The bloggers are either professional journalists, industry insiders or business travelers. All are consistently good writers, and most have a delicious sense of the ironic.

Tripso was founded by Christopher Elliott, a prolific writer and travel expert; he's covered the travel industry for more than 20 years for various print, broadcast and online outlets, and he's also a capable ombudsman for travelers who've been overcharged, underserved, insulted and/or ignored. He's particularly adept on the subject of hidden charges.

The Practical Nomad is written by consumer advocate, journalist and speaker Edward Hasbrouck, who has earned kudos for his dogged reporting on airfare discounts, independent travel and traveler privacy. His tough copy on traveler and data-privacy issues earned him an award for investigative reporting from the Society of American Travel Writers Foundation, and he's frequently quoted in the mainstream business and technology press. If you've ever wondered who can access information about you (not just your name, address and contact numbers, but your travel patterns, credit card and frequent flyer numbers, and who paid for your ticket), read his blog. It's chilling. If you'd rather not freak out over the implications of lax privacy oversight, read his Practical Nomad travel guides instead--they'll give even the most burnt-out road warrior incentive to get on another plane.